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Publisher: Elsevier   (Total: 3118 journals)

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Showing 1 - 200 of 3118 Journals sorted alphabetically
A Practical Logic of Cognitive Systems     Full-text available via subscription   (Followers: 7)
AASRI Procedia     Open Access   (Followers: 15)
Academic Pediatrics     Hybrid Journal   (Followers: 25, SJR: 1.402, h-index: 51)
Academic Radiology     Hybrid Journal   (Followers: 22, SJR: 1.008, h-index: 75)
Accident Analysis & Prevention     Partially Free   (Followers: 89, SJR: 1.109, h-index: 94)
Accounting Forum     Hybrid Journal   (Followers: 25, SJR: 0.612, h-index: 27)
Accounting, Organizations and Society     Hybrid Journal   (Followers: 30, SJR: 2.515, h-index: 90)
Achievements in the Life Sciences     Open Access   (Followers: 4)
Acta Anaesthesiologica Taiwanica     Open Access   (Followers: 5, SJR: 0.338, h-index: 19)
Acta Astronautica     Hybrid Journal   (Followers: 374, SJR: 0.726, h-index: 43)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 3)
Acta Biomaterialia     Hybrid Journal   (Followers: 27, SJR: 2.02, h-index: 104)
Acta Colombiana de Cuidado Intensivo     Full-text available via subscription   (Followers: 1)
Acta de Investigación Psicológica     Open Access   (Followers: 2)
Acta Ecologica Sinica     Open Access   (Followers: 8, SJR: 0.172, h-index: 29)
Acta Haematologica Polonica     Free   (Followers: 1, SJR: 0.123, h-index: 8)
Acta Histochemica     Hybrid Journal   (Followers: 3, SJR: 0.604, h-index: 38)
Acta Materialia     Hybrid Journal   (Followers: 234, SJR: 3.683, h-index: 202)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5, SJR: 0.615, h-index: 21)
Acta Mechanica Solida Sinica     Full-text available via subscription   (Followers: 9, SJR: 0.442, h-index: 21)
Acta Oecologica     Hybrid Journal   (Followers: 10, SJR: 0.915, h-index: 53)
Acta Otorrinolaringologica (English Edition)     Full-text available via subscription   (Followers: 1)
Acta Otorrinolaringológica Española     Full-text available via subscription   (Followers: 3, SJR: 0.311, h-index: 16)
Acta Pharmaceutica Sinica B     Open Access   (Followers: 2)
Acta Poética     Open Access   (Followers: 4)
Acta Psychologica     Hybrid Journal   (Followers: 25, SJR: 1.365, h-index: 73)
Acta Sociológica     Open Access  
Acta Tropica     Hybrid Journal   (Followers: 6, SJR: 1.059, h-index: 77)
Acta Urológica Portuguesa     Open Access  
Actas Dermo-Sifiliograficas     Full-text available via subscription   (Followers: 4)
Actas Dermo-Sifiliográficas (English Edition)     Full-text available via subscription   (Followers: 3)
Actas Urológicas Españolas     Full-text available via subscription   (Followers: 4, SJR: 0.383, h-index: 19)
Actas Urológicas Españolas (English Edition)     Full-text available via subscription   (Followers: 2)
Actualites Pharmaceutiques     Full-text available via subscription   (Followers: 5, SJR: 0.141, h-index: 3)
Actualites Pharmaceutiques Hospitalieres     Full-text available via subscription   (Followers: 4, SJR: 0.112, h-index: 2)
Acupuncture and Related Therapies     Hybrid Journal   (Followers: 5)
Acute Pain     Full-text available via subscription   (Followers: 13)
Ad Hoc Networks     Hybrid Journal   (Followers: 11, SJR: 0.967, h-index: 57)
Addictive Behaviors     Hybrid Journal   (Followers: 15, SJR: 1.514, h-index: 92)
Addictive Behaviors Reports     Open Access   (Followers: 6)
Additive Manufacturing     Hybrid Journal   (Followers: 7, SJR: 1.039, h-index: 5)
Additives for Polymers     Full-text available via subscription   (Followers: 22)
Advanced Cement Based Materials     Full-text available via subscription   (Followers: 3)
Advanced Drug Delivery Reviews     Hybrid Journal   (Followers: 137, SJR: 5.2, h-index: 222)
Advanced Engineering Informatics     Hybrid Journal   (Followers: 11, SJR: 1.265, h-index: 53)
Advanced Powder Technology     Hybrid Journal   (Followers: 17, SJR: 0.739, h-index: 33)
Advances in Accounting     Hybrid Journal   (Followers: 9, SJR: 0.299, h-index: 15)
Advances in Agronomy     Full-text available via subscription   (Followers: 15, SJR: 2.071, h-index: 82)
Advances in Anesthesia     Full-text available via subscription   (Followers: 27, SJR: 0.169, h-index: 4)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 3)
Advances in Applied Mathematics     Full-text available via subscription   (Followers: 6, SJR: 1.054, h-index: 35)
Advances in Applied Mechanics     Full-text available via subscription   (Followers: 11, SJR: 0.801, h-index: 26)
Advances in Applied Microbiology     Full-text available via subscription   (Followers: 22, SJR: 1.286, h-index: 49)
Advances In Atomic, Molecular, and Optical Physics     Full-text available via subscription   (Followers: 16, SJR: 3.31, h-index: 42)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4, SJR: 2.277, h-index: 43)
Advances in Botanical Research     Full-text available via subscription   (Followers: 3, SJR: 0.619, h-index: 48)
Advances in Cancer Research     Full-text available via subscription   (Followers: 26, SJR: 2.215, h-index: 78)
Advances in Carbohydrate Chemistry and Biochemistry     Full-text available via subscription   (Followers: 9, SJR: 0.9, h-index: 30)
Advances in Catalysis     Full-text available via subscription   (Followers: 5, SJR: 2.139, h-index: 42)
Advances in Cell Aging and Gerontology     Full-text available via subscription   (Followers: 4)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 13)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 26, SJR: 0.183, h-index: 23)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 10, SJR: 0.665, h-index: 29)
Advances in Chronic Kidney Disease     Full-text available via subscription   (Followers: 9, SJR: 1.268, h-index: 45)
Advances in Clinical Chemistry     Full-text available via subscription   (Followers: 29, SJR: 0.938, h-index: 33)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 18, SJR: 2.314, h-index: 130)
Advances in Computers     Full-text available via subscription   (Followers: 16, SJR: 0.223, h-index: 22)
Advances in Dermatology     Full-text available via subscription   (Followers: 12)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 12)
Advances in Digestive Medicine     Open Access   (Followers: 7)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 6)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Ecological Research     Full-text available via subscription   (Followers: 46, SJR: 3.25, h-index: 43)
Advances in Engineering Software     Hybrid Journal   (Followers: 26, SJR: 0.486, h-index: 10)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 8)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 44, SJR: 5.465, h-index: 64)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 52, SJR: 0.674, h-index: 38)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 16)
Advances in Genetics     Full-text available via subscription   (Followers: 15, SJR: 2.558, h-index: 54)
Advances in Genome Biology     Full-text available via subscription   (Followers: 11)
Advances in Geophysics     Full-text available via subscription   (Followers: 6, SJR: 2.325, h-index: 20)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 22, SJR: 0.906, h-index: 24)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 0.497, h-index: 31)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 26)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 2, SJR: 0.396, h-index: 27)
Advances in Immunology     Full-text available via subscription   (Followers: 36, SJR: 4.152, h-index: 85)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 1.132, h-index: 42)
Advances in Insect Physiology     Full-text available via subscription   (Followers: 3, SJR: 1.274, h-index: 27)
Advances in Integrative Medicine     Hybrid Journal   (Followers: 6)
Advances in Intl. Accounting     Full-text available via subscription   (Followers: 4)
Advances in Life Course Research     Hybrid Journal   (Followers: 8, SJR: 0.764, h-index: 15)
Advances in Lipobiology     Full-text available via subscription   (Followers: 2)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Marine Biology     Full-text available via subscription   (Followers: 16, SJR: 1.645, h-index: 45)
Advances in Mathematics     Full-text available via subscription   (Followers: 10, SJR: 3.261, h-index: 65)
Advances in Medical Sciences     Hybrid Journal   (Followers: 6, SJR: 0.489, h-index: 25)
Advances in Medicinal Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Microbial Physiology     Full-text available via subscription   (Followers: 5, SJR: 1.44, h-index: 51)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 23)
Advances in Molecular and Cellular Endocrinology     Full-text available via subscription   (Followers: 10)
Advances in Molecular Toxicology     Full-text available via subscription   (Followers: 9, SJR: 0.324, h-index: 8)
Advances in Nanoporous Materials     Full-text available via subscription   (Followers: 4)
Advances in Oncobiology     Full-text available via subscription   (Followers: 3)
Advances in Organ Biology     Full-text available via subscription   (Followers: 2)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15, SJR: 2.885, h-index: 45)
Advances in Parallel Computing     Full-text available via subscription   (Followers: 7, SJR: 0.148, h-index: 11)
Advances in Parasitology     Full-text available via subscription   (Followers: 7, SJR: 2.37, h-index: 73)
Advances in Pediatrics     Full-text available via subscription   (Followers: 24, SJR: 0.4, h-index: 28)
Advances in Pharmaceutical Sciences     Full-text available via subscription   (Followers: 13)
Advances in Pharmacology     Full-text available via subscription   (Followers: 15, SJR: 1.718, h-index: 58)
Advances in Physical Organic Chemistry     Full-text available via subscription   (Followers: 8, SJR: 0.384, h-index: 26)
Advances in Phytomedicine     Full-text available via subscription  
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3, SJR: 0.248, h-index: 11)
Advances in Plant Biochemistry and Molecular Biology     Full-text available via subscription   (Followers: 8)
Advances in Plant Pathology     Full-text available via subscription   (Followers: 5)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 18)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 20, SJR: 1.5, h-index: 62)
Advances in Psychology     Full-text available via subscription   (Followers: 62)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5, SJR: 0.478, h-index: 32)
Advances in Radiation Oncology     Open Access  
Advances in Small Animal Medicine and Surgery     Hybrid Journal   (Followers: 3, SJR: 0.1, h-index: 2)
Advances in Space Biology and Medicine     Full-text available via subscription   (Followers: 5)
Advances in Space Research     Full-text available via subscription   (Followers: 368, SJR: 0.606, h-index: 65)
Advances in Structural Biology     Full-text available via subscription   (Followers: 8)
Advances in Surgery     Full-text available via subscription   (Followers: 8, SJR: 0.823, h-index: 27)
Advances in the Study of Behavior     Full-text available via subscription   (Followers: 31, SJR: 1.321, h-index: 56)
Advances in Veterinary Medicine     Full-text available via subscription   (Followers: 16)
Advances in Veterinary Science and Comparative Medicine     Full-text available via subscription   (Followers: 13)
Advances in Virus Research     Full-text available via subscription   (Followers: 6, SJR: 1.878, h-index: 68)
Advances in Water Resources     Hybrid Journal   (Followers: 45, SJR: 2.408, h-index: 94)
Aeolian Research     Hybrid Journal   (Followers: 5, SJR: 0.973, h-index: 22)
Aerospace Science and Technology     Hybrid Journal   (Followers: 336, SJR: 0.816, h-index: 49)
AEU - Intl. J. of Electronics and Communications     Hybrid Journal   (Followers: 8, SJR: 0.318, h-index: 36)
African J. of Emergency Medicine     Open Access   (Followers: 5, SJR: 0.344, h-index: 6)
Ageing Research Reviews     Hybrid Journal   (Followers: 9, SJR: 3.289, h-index: 78)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 444, SJR: 1.385, h-index: 72)
Agri Gene     Hybrid Journal  
Agricultural and Forest Meteorology     Hybrid Journal   (Followers: 15, SJR: 2.18, h-index: 116)
Agricultural Systems     Hybrid Journal   (Followers: 31, SJR: 1.275, h-index: 74)
Agricultural Water Management     Hybrid Journal   (Followers: 42, SJR: 1.546, h-index: 79)
Agriculture and Agricultural Science Procedia     Open Access  
Agriculture and Natural Resources     Open Access   (Followers: 3)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 56, SJR: 1.879, h-index: 120)
Ain Shams Engineering J.     Open Access   (Followers: 5, SJR: 0.434, h-index: 14)
Air Medical J.     Hybrid Journal   (Followers: 5, SJR: 0.234, h-index: 18)
AKCE Intl. J. of Graphs and Combinatorics     Open Access   (SJR: 0.285, h-index: 3)
Alcohol     Hybrid Journal   (Followers: 11, SJR: 0.922, h-index: 66)
Alcoholism and Drug Addiction     Open Access   (Followers: 8)
Alergologia Polska : Polish J. of Allergology     Full-text available via subscription   (Followers: 1)
Alexandria Engineering J.     Open Access   (Followers: 1, SJR: 0.436, h-index: 12)
Alexandria J. of Medicine     Open Access   (Followers: 1)
Algal Research     Partially Free   (Followers: 9, SJR: 2.05, h-index: 20)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
Allergologia et Immunopathologia     Full-text available via subscription   (Followers: 1, SJR: 0.46, h-index: 29)
Allergology Intl.     Open Access   (Followers: 4, SJR: 0.776, h-index: 35)
Alpha Omegan     Full-text available via subscription   (SJR: 0.121, h-index: 9)
ALTER - European J. of Disability Research / Revue Européenne de Recherche sur le Handicap     Full-text available via subscription   (Followers: 9, SJR: 0.158, h-index: 9)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 48, SJR: 4.289, h-index: 64)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 4)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 4)
Ambulatory Pediatrics     Hybrid Journal   (Followers: 5)
American Heart J.     Hybrid Journal   (Followers: 49, SJR: 3.157, h-index: 153)
American J. of Cardiology     Hybrid Journal   (Followers: 48, SJR: 2.063, h-index: 186)
American J. of Emergency Medicine     Hybrid Journal   (Followers: 41, SJR: 0.574, h-index: 65)
American J. of Geriatric Pharmacotherapy     Full-text available via subscription   (Followers: 9, SJR: 1.091, h-index: 45)
American J. of Geriatric Psychiatry     Hybrid Journal   (Followers: 14, SJR: 1.653, h-index: 93)
American J. of Human Genetics     Hybrid Journal   (Followers: 32, SJR: 8.769, h-index: 256)
American J. of Infection Control     Hybrid Journal   (Followers: 26, SJR: 1.259, h-index: 81)
American J. of Kidney Diseases     Hybrid Journal   (Followers: 31, SJR: 2.313, h-index: 172)
American J. of Medicine     Hybrid Journal   (Followers: 46, SJR: 2.023, h-index: 189)
American J. of Medicine Supplements     Full-text available via subscription   (Followers: 3)
American J. of Obstetrics and Gynecology     Hybrid Journal   (Followers: 204, SJR: 2.255, h-index: 171)
American J. of Ophthalmology     Hybrid Journal   (Followers: 60, SJR: 2.803, h-index: 148)
American J. of Ophthalmology Case Reports     Open Access   (Followers: 6)
American J. of Orthodontics and Dentofacial Orthopedics     Full-text available via subscription   (Followers: 6, SJR: 1.249, h-index: 88)
American J. of Otolaryngology     Hybrid Journal   (Followers: 24, SJR: 0.59, h-index: 45)
American J. of Pathology     Hybrid Journal   (Followers: 27, SJR: 2.653, h-index: 228)
American J. of Preventive Medicine     Hybrid Journal   (Followers: 26, SJR: 2.764, h-index: 154)
American J. of Surgery     Hybrid Journal   (Followers: 35, SJR: 1.286, h-index: 125)
American J. of the Medical Sciences     Hybrid Journal   (Followers: 12, SJR: 0.653, h-index: 70)
Ampersand : An Intl. J. of General and Applied Linguistics     Open Access   (Followers: 6)
Anaerobe     Hybrid Journal   (Followers: 4, SJR: 1.066, h-index: 51)
Anaesthesia & Intensive Care Medicine     Full-text available via subscription   (Followers: 59, SJR: 0.124, h-index: 9)
Anaesthesia Critical Care & Pain Medicine     Full-text available via subscription   (Followers: 13)
Anales de Cirugia Vascular     Full-text available via subscription  
Anales de Pediatría     Full-text available via subscription   (Followers: 2, SJR: 0.209, h-index: 27)
Anales de Pediatría (English Edition)     Full-text available via subscription  
Anales de Pediatría Continuada     Full-text available via subscription   (SJR: 0.104, h-index: 3)
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 4, SJR: 2.577, h-index: 7)
Analytica Chimica Acta     Hybrid Journal   (Followers: 36, SJR: 1.548, h-index: 152)
Analytical Biochemistry     Hybrid Journal   (Followers: 164, SJR: 0.725, h-index: 154)
Analytical Chemistry Research     Open Access   (Followers: 8, SJR: 0.18, h-index: 2)
Analytical Spectroscopy Library     Full-text available via subscription   (Followers: 12)
Anesthésie & Réanimation     Full-text available via subscription   (Followers: 1)
Anesthesiology Clinics     Full-text available via subscription   (Followers: 22, SJR: 0.421, h-index: 40)
Angiología     Full-text available via subscription   (SJR: 0.124, h-index: 9)
Angiologia e Cirurgia Vascular     Open Access  

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Journal Cover Agriculture and Natural Resources
  [3 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Online) 2452-316X
   Published by Elsevier Homepage  [3118 journals]
  • Effects of fish silage on growth and biochemical characteristics of fresh
           water microalga Scenedesmus sp. MB 23

    • Authors: Jasmin Kaippilliparambil Abdulsamad; Saramma Aikkarakunnath Varghese
      Pages: 235 - 242
      Abstract: Publication date: August 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 4
      Author(s): Jasmin Kaippilliparambil Abdulsamad, Saramma Aikkarakunnath Varghese
      Scenedesmus sp. MB 23 was cultivated in fish silage to study the effects of different concentrations on the growth and biochemical characteristics, particularly the protein, carbohydrate and lipid properties. Fish silage with 12% concentration was most effective for the growth and biomass production of Scenedesmus sp. The microalga reached maximum cell density (2433.89 × 104 cells/mL), chlorophyll-a concentration (2.766 μg/mL), specific growth rate (0.48/d) and biomass (2.73 g/L) on this medium. In mass culture, enhanced production of protein (123.87 mg/g dry weight of alga), carbohydrate (44.904 mg/g dry weight of alga) and lipid (84.21 mg/g dry weight of alga) was found using 9% fish silage. The effective reduction (up to 90%) in the concentrations of nitrate, phosphorus and ammonia in the final fish silage medium proved the removal efficiency of Scenedesmus sp. The enhanced production of Scenedesmus sp. MB 23 indicated that effective bioremediation of fish waste can be conducted using algal mass production in fish silage. The study also proved that microalgae grown in fish silage have great industrial potential and can be used as a source of feed and biofuel.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.10.002
  • Papaya carotenoids increased in Oxisols soils

    • Authors: Kamonwan Sangsoy; Orarat Mongkolporn; Wachiraya Imsabai; Kietsuda Luengwilai
      Pages: 253 - 261
      Abstract: Publication date: August 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 4
      Author(s): Kamonwan Sangsoy, Orarat Mongkolporn, Wachiraya Imsabai, Kietsuda Luengwilai
      The papaya fruit is healthy for humans as it contains high levels of antioxidants and provitamin A due to high lycopene and β-carotenes contents, respectively. The carotenoids were determined from papayas grown in three different locations—Kamphaeng Saen (KS), Sisaket (SK), and Tha Mai (TM)—and also the study investigated whether the Oxisols soil was capable of increasing the carotenoids content in the papaya fruit. The lycopene, β-carotene and β-cryptoxanthin contents were determined from four different ripening stages (mature green to fully ripe). Concomitantly, the transcript levels of five genes involved in carotenoids biosynthesis—phytoene desaturase (PDS), carotene desaturase (ZDS), lycopene-β-cyclase (LCY-B1 and LCY-B2), and β-carotene hydroxylase (B-CHX)—were investigated. Papayas grown at TM had the highest lycopene, which was supported by the high expression levels of PDS, ZDS and B-CHX and the lower expression levels of the two LCY-B genes; however the locations did not affect the fruit quality. The ‘Plak Mai Lai’ papaya was further investigated by being grown in one location but on two different soil types (Oxisols and Ultisols), to compare their carotenoids contents. Higher carotenoid contents were detected in the papaya grown in the Oxisols.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.10.003
  • Influence of heavy metals on rhizosphere microbial communities of Siam
           weed (Chromolaena odorata (L.)) using a 16S rRNA gene amplicon sequencing

    • Authors: Thanyaporn Ruangdech; Manoosak Wongphatcharachai; Christopher Staley; Michael J. Sadowsky; Kannika Sajjaphan
      Pages: 137 - 141
      Abstract: Publication date: June 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 3
      Author(s): Thanyaporn Ruangdech, Manoosak Wongphatcharachai, Christopher Staley, Michael J. Sadowsky, Kannika Sajjaphan
      A 16S rRNA amplicon sequencing approach was used to assess the impacts of cadmium (Cd) and zinc (Zn) contamination on populations of rhizobacteria on Siam weed (Chromolaena odorata (L.)). Bacterial communities were characterized using the Illumina MiSeq platform and the V6 hypervariable region of the 16S rRNA gene. Among the 54,026 unique operational taxonomic units (OTUs) identified, 99.7% were classified as bacteria and the rest were classified as archaea. Several dominant bacterial phyla were observed in all samples—Proteobacteria, Actinobacteria, Acidobacteria, Firmicutes and Bacteroidetes. These five phyla accounted for 89.2% of all OTUs identified among all sites, and only two OTUs could not be classified to a phylum. Comparison among samples containing low and high levels of Cd contamination using nonparametric Shannon and Shannon diversity indices showed that soils with low levels of diversity had a higher level of Cd (p < 0.05). These results indicated that levels of Cd may significantly alter bacterial species selection. The Cd- and Zn-resistant bacteria from each sample were subjected to heavy-metal minimum inhibitory concentration (MIC) analyses. The MIC values obtained from 1152 isolates were used to individually analyze the pattern of gene function using the BioNumerics software. The results of this analysis showed that 26.7% of the bacteria were resistant to Cd concentrations up to 320 mg/L and only 2.3% of bacteria were resistant to Zn at concentrations up to 3200 mg/L. The MIC analyses indicated that the number of resistant bacteria decreased with increasing metal concentrations and those bacteria resistant to Cd and Zn may contain more than one group of metal-resistance genes.

      PubDate: 2017-09-04T00:07:10Z
      DOI: 10.1016/j.anres.2016.05.005
  • Unveiling cryptic diversity of the anemonefish genera Amphiprion and
           Premnas (Perciformes: Pomacentridae) in Thailand with mitochondrial DNA

    • Authors: Pradipunt Thongtam na Ayudhaya; Narongrit Muangmai; Nuwadee Banjongsat; Worapong Singchat; Sommai Janekitkarn; Surin Peyachoknagul; Kornsorn Srikulnath
      Pages: 198 - 205
      Abstract: Publication date: June 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 3
      Author(s): Pradipunt Thongtam na Ayudhaya, Narongrit Muangmai, Nuwadee Banjongsat, Worapong Singchat, Sommai Janekitkarn, Surin Peyachoknagul, Kornsorn Srikulnath
      The genera Amphiprion and Premnas comprise the common anemonefish that are widely distributed in tropical areas. Species identification of these two genera is difficult due to high, intraspecific, morphological variation. Recently, DNA barcoding has been employed as an efficient tool that uses a short genetic marker in an organism's DNA to enable the identification and recognition of cryptic species. This study applied three regions of mitochondrial DNA—cytochrome c oxidase I (COI), cytochrome b (Cytb) and 16S rRNA—as DNA barcodes for species identification of seven species of Amphiprion and one species of Premnas in Thailand. Three species-delimitation methods—general mixed Yule-coalescent (GMYC), automatic barcoding gap detection (ABGD) and a Bayesian implementation of the Poisson tree processes model (bPTP)—were also used to estimate the number of species. An overlap was found between the intra- and inter-specific genetic divergence values in Cytb and 16S rRNA, but not for the COI data. This indicated that COI was the most effective for identifying different anemonefish species. A three-gene phylogenetic analysis and species-delimitation methods based on both COI and Cytb data suggested cryptic diversity in Amphiprion clarkii, A. percula, A. ocellaris and Premnas biaculeatus. Different distributions were found also for two cryptic species of A. clarkia—one restricted to the Gulf of Thailand and the other to the Andaman Sea. The results confirmed the efficiency of COI as a suitable marker for species identification of anemonefish.

      PubDate: 2017-09-04T00:07:10Z
      DOI: 10.1016/j.anres.2017.07.001
  • Searching for and analysis of bacterial blight resistance genes from
           Thailand rice germplasm

    • Authors: Siriporn Sombunjitt; Tanee Sriwongchai; Chatuporn Kuleung; Vipa Hongtrakul
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Siriporn Sombunjitt, Tanee Sriwongchai, Chatuporn Kuleung, Vipa Hongtrakul
      In Thailand, rice (Oryza sativa L.) is the main food and agricultural product for export. However, the production of rice has faced many problems and bacterial blight disease is one of the problems in rice growing. Bacterial blight resistance Xa4, Xa7, xa5 and xa13 genes were discovered in 155 Thai rice cultivars using polymerase chain reaction-based gene-linked and gene-specific markers and the specific allele was compared with susceptible rice cultivars and with rice carrying each resistance gene. The results showed the same alleles as in the Xa4 resistance gene (89.68%), followed by the Xa7 resistance gene (11.61%), while the same alleles as xa5 and xa13 resistance genes were not found in the Thai rice germplasm studied. A new allele of Xa7 was found and part of the DNA sequence was analyzed and compared to alleles obtained from resistant and susceptible rice lines. Sixteen cultivars carried the same alleles as the Xa4 and Xa7 resistant alleles. Phenotyping of 12 rice cultivars was performed using the leaf-clipping method and inoculation with three isolates of Xoo (TB0002, Xoo5 and Xoo6). Three rice cultivars (Kan Phu Daeng, Phuyai Li and RD23) had resistance to all three Xoo isolates. These cultivars will be useful as genetic sources in rice breeding programs in the future.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.001
  • Regeneration and self-thinning processes in a restored Rhizophora
           apiculata plantation in southern Thailand

    • Authors: Aor Pranchai
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Aor Pranchai
      Degraded mangrove sites, such as abandoned shrimp ponds, are usually restored through the establishment of even-aged Rhizophora apiculata stands with an initial spacing of 1.5 m × 1.5 m. It has been observed that under good site conditions, densely planted R. apiculata trees compete from an early age onward. However, it is unknown whether early competition and self-thinning occur in recently restored mangrove plantations. The study was conducted in a 16-year-old R. apiculata stand established on an abandoned shrimp pond in Nakhon Si Thammarat province, southern Thailand. All trees were stem-mapped and their basal area was determined. Point process modeling was used to simulate the impact of self-thinning and regeneration processes on the spatial distribution of trees. Spatial statistics were applied to assess the goodness-of-fit of the simulated tree distribution compared to the observed distribution. Tree density declined from initially 4444 trees/ha to 3566 trees/ha, while the distribution of tree stems became more regular. The simulations indicated that 50% of all planted R. apiculata trees died due to self-thinning and 38% of all mapped trees regenerated naturally in close proximity to their mother tree. Moreover, planted trees tended to have a smaller basal area. The results suggest that the density of planted R. apiculata seedlings could be lowered in order to reduce the costs of mangrove restoration, as a large number of seedlings is lost due to density-dependent mortality.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.004
  • Pattern and shape effects of orchid flower traps on attractiveness of
           Thrips palmi (Thysanoptera: Thripidae) in an orchid farm

    • Authors: Jirawadee Pinkesorn; John R. Milne; Sangvorn Kitthawee
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Jirawadee Pinkesorn, John R. Milne, Sangvorn Kitthawee
      Thrips palmi Karny is widely distributed and causes damage to orchid flowers. Orchid varieties in the genera Dendrobium and Mokara are different in shape. This study determined if different trap patterns which reflect flower shape may affect the attractiveness to thrips. The shapes of Dendrobium and Mokara orchid flowers were characterized and the numbers of flowers per raceme were counted in inflorescences in order to design realistic trap patterns. Four patterns (A, B, C and D) of flower traps were made by increasing the petal area. The mean number of T. palmi in flower pattern A was significantly lower than for flower patterns B, C and D (p < 0.05). The numbers of T. palmi in flower traps increased with flower petal area (r = 0.63, p < 0.05), but decreased with increasing length of flower contour (r = −0.56, p < 0.05). Six patterns (B1, B2, B3, B4, B5 and B6) of inflorescence traps were created by increasing the number of flowers per raceme. The numbers of T. palmi increased with increased numbers of flowers per raceme, pattern area and length of contour (r = 0.74, p < 0.05). Thus, inflorescence patterns and sizes affected the numbers of T. palmi attracted. The results of this research indicated that not only the patterns but also the sizes of traps were important factors for attractiveness to thrips. This information may be useful in designing and monitoring control programs for T. palmi.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.006
  • Genotoxicity monitoring of industrial wastes using plant bioassays and
           management through vermitechnology: A review

    • Authors: Sartaj Ahmad Bhat; Jaswinder Singh; Keshav Singh; Adarsh Pal Vig
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Sartaj Ahmad Bhat, Jaswinder Singh, Keshav Singh, Adarsh Pal Vig
      The main objective of this review was to summarize and present a comprehensive account of the cytotoxic, genotoxic and mutagenic potential of various industrial wastes/sludges using some well-known plant bioassays followed by their bioremediation using vermitechnology. Industries are the main origin of discharges of various types of chemical wastes and are the main causes of environmental degradation. The direct application of industrial sludges could also harm the local biota. The genotoxicity of industrial sludges is assessed using various plant bioassays (for example Allium cepa, Vicia faba) and these bioassays are comparatively more sensitive and cost-effective compared to other in-vitro genotoxicity bioassays. In addition, the materials used for toxicity evaluation are easily available and are being routinely used for the monitoring of environmental pollution. In most studies, the increases in root length and mitotic index, as well as the decrease in chromosomal aberrations in post vermicomposted sludges/wastes indicate that earthworms have the ability to reduce the ecotoxicogenetic effects of sludges/wastes. Post vermicompost is considered an excellent material of a homogenous nature as it has reduced levels of contaminants and holds more nutrients over a longer time without affecting the environment. The biotransformation potential of earthworms and their ability to detoxify most of the heavy metals in industrial sludges is because of their strong metabolic system and the involvement of diverse intestinal microflora and chloragocytic cells that reduce toxic forms to nontoxic forms. This unique ability of earthworms confirms the effectiveness of vermitechnology in reducing the toxicity of industrial wastes.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.002
  • Effect of dietary supplementation of binahong leaf meal, betel nut meal or
           their combination on serum albumin and globulin, fecal endoparasites and
           bacterial counts in milk of Saanen goats suffering from subclinical

    • Authors: Endang Kusumanti; Sugiharto Sugiharto
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Endang Kusumanti, Sugiharto Sugiharto
      The effect was investigated of dietary supplementation of binahong (Anredera cordifolia (Ten.) Steenis) leaf meal, betel nut (Arecha catechu L.) meal or their combination on serum albumin and globulin, fecal endoparasites and bacterial counts in the milk of Saanen goats suffering from subclinical mastitis. The goats were randomly allotted to one of four experimental groups: control diet (diet without binahong leaf meal or betel nut meal; CON), diet supplemented with binahong leaf meal (1 g/kg body weight; BNH), diet supplemented with betel nut meal (1 g/kg body weight; BTN) and diet supplemented with a combination of binahong leaf meal and betel nut meal (both 0.5 g/kg body weight; BNH + BTN). After 14 d treatment, the pH was higher (p < 0.05) in the milk of the CON group compared to the treated groups. The numbers of udders positive for subclinical mastitis were reduced (p < 0.05) following the treatments with BNH, BTN or BNH + BTN. Total viable bacteria were higher (p < 0.05) in the milk of the CON group than in the treated groups. The numbers of oocytes and coccidial oocysts were higher (p < 0.05) in the feces of the CON group than those in the treated groups. There were no differences (p > 0.05) in levels of serum albumin and globulin and milk production across the treatment diets. In conclusion, dietary supplementation of binahong leaf meal, betel nut meal and a combination of both showed potential to reduce the load of endoparasites in the gastrointestinal tract and to reduce subclinical mastitis in lactating Saanen goats.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.005
  • Breeding ecology of buff-breasted babbler (Pellorneum tickelli) at Doi
           Chiang Dao Wildlife Research Station, Chiang Mai province, Thailand

    • Authors: Patchareeyaporn Panyaarj; Prasit Wangpakapattanawong; Narit Sitasuwan; Sawat Sanitjan
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Patchareeyaporn Panyaarj, Prasit Wangpakapattanawong, Narit Sitasuwan, Sawat Sanitjan
      The behavior of the buff-breasted babbler (Pellorneum tickelli) was recorded from April 2010 to May 2012 along creeks in Doi Chiang Dao Wildlife Research Station, Chiang Mai, Thailand. Fifteen nests of the buff-breasted babbler were found on four creeks: Maeka, Maemard, Ong and Sikrobkrua. The general behavior of birds included foraging, excretion, locomotion, preening and vigilance. The complete breeding cycle of the buff-breasted babbler in this study was almost 1 mth. Egg clutch size was in the range 3–4 and the nestlings hatched almost simultaneously. The eggs were incubated by both the males and the females. After hatching, both parents invested in intensive parental care. As well as providing food, they also protected their nestlings. This information can be used to help with conservation planning in the area and elsewhere.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.10.004
  • Initial contents of residue quality parameters predict effects of larger
           soil fauna on decomposition of contrasting quality residues

    • Authors: Ratikorn Sanghaw; Chuleemas Boonthai Iwai; Chutinan Choosai; Patma Vityakon
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Ratikorn Sanghaw, Chuleemas Boonthai Iwai, Chutinan Choosai, Patma Vityakon
      A 52-week decomposition study employing the soil larger fauna exclusion technique through litter bags of two mesh sizes (20 and 0.135 mm) was conducted in a long-term (18 yr) field experiment. Organic residues of contrasting quality of N, lignin (L), polyphenols (PP) and cellulose (CL) all in grams per kilogram: rice straw (RS: 4.5N, 22.2L, 3.9PP, 449CL), groundnut stover (GN: 21.2N, 71.4L, 8.1PP, 361CL), dipterocarp leaf litter (DP: 5.1N, 303L, 68.9PP, 271CL) and tamarind leaf litter (TM: 11.6N, 190L, 27.7PP, 212CL) were applied to soil annually to assess and predict soil larger fauna effects (LFE) on decomposition based on the initial contents of the residue chemical constituents. Mass losses in all residues were not different under soil fauna inclusion and exclusion treatments during the early stage (up to week 4 after residue incorporation) but became significantly higher under the inclusion than the exclusion treatments during the later stage (week 8 onwards). LFE were highest (2−51%) under the resistant DP at most decomposition stages. During the early stage (weeks 1−4), both the initial contents of labile (N and CL) and recalcitrant C, and recalcitrant C interaction with labile constituents of residues showed significant correlations (r = 0.64−0.90) with effects on LFE. In the middle stage (week 16), LFE under resistant DP and TM had significant positive correlations with L, L+PP and L/CL. They were also affected by these quality parameters as shown by the multiple regression analysis. In the later stages (weeks 26−52), the L/CL ratio was the most prominent quality parameter affecting LFE.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.003
  • FM - TOC

    • Abstract: Publication date: August 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 4

      PubDate: 2017-12-27T06:04:33Z
  • Effect of moringa (Moringa oleifera) leaf supplementation on growth
           performance and feed utilization of Bocourti's catfish (Pangasius

    • Authors: Kittisak Puycha; Bundit Yuangsoi; Siripavee Charoenwattanasak; Sutee Wongmaneeprateep; Pornthep Niamphithak; Pattama Wiriyapattanasub
      Abstract: Publication date: Available online 7 November 2017
      Source:Agriculture and Natural Resources
      Author(s): Kittisak Puycha, Bundit Yuangsoi, Siripavee Charoenwattanasak, Sutee Wongmaneeprateep, Pornthep Niamphithak, Pattama Wiriyapattanasub
      The optimal level of dietary moringa leaf was determined on the growth performance, feed utilization, digestibility and serum biochemistry of Bocourti's catfish with mean wet weights of 3.72 ± 0.06 g per fish. Fish were fed with diets containing isonitrogenouse (350 g/kg crude protein) and isoenergetic (3000 kcal/kg) supplemented with dietary moringa leaf at 0 g/kg fish, 100 g/kg fish, 150 g/kg fish and 200 g/kg fish for 60 d. Fish were hand fed to apparent satiation twice a day. At the end of the experiment, a significant (p < 0.05) reduction in the growth performance was found as the moringa leaf inclusion increased in the diets, along with slightly poorer growth performance and feed utilization. Fish fed the diet containing moringa leaf at 100 g/kg demonstrated better growth than at the other inclusion levels, but it was not significantly different from the control group. The digestibility coefficient and protein digestibility were lower in fish fed with a higher inclusion of moringa leaf in the diets (p < 0.05). Pepsin digestibility and serum biochemical parameters were not different among all treatments (p > 0.05). The study indicated that dietary moringa leaf could be included in the Bocourti's catfish diet at possibly not over 100 g/kg fish without a negative effect on the growth, feed utilization, digestibility and serum biochemistry.

      PubDate: 2017-11-10T16:22:00Z
      DOI: 10.1016/j.anres.2017.10.001
  • Growth of teak regenerated by coppice and stump planting in Mae Moh
           plantation, Lampang province, Thailand

    • Authors: Anatta Auykim; Khwanchai Duangsathaporn; Patsi Prasomsin
      Abstract: Publication date: Available online 24 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Anatta Auykim, Khwanchai Duangsathaporn, Patsi Prasomsin
      The current annual increment (CAIdbh) and the mean annual increment (MAIdbh) both for the diameter at breast height (1.3 m) were investigated to compare the differences between coppice and stump-planted teak in Mae Moh Plantation. Forty-eight sample cores were collected from a 9 yr-old teak plantation using an increment borer; annual increments were analyzed using dendrochronological techniques. The results indicated that there was no significant (p > 0.05) difference in the average diameter at breast height (DBH) between the coppice and stump-planted teak, whereas the total height of stump planting was significantly greater than that of coppice teak. The CAIdbh of coppice teak was in the range 0.316–2.371 cm and continuously decreased throughout the 9 yr period. The CAIdbh of stump planting was in the range 0.162–1.982 cm and continuously increased from the beginning of growth for 5 yr followed by a decline thereafter for 4 yr. The CAIdbh of coppice showed rapid growth in the years 1–4 and was greater than for the stump-planted teak even in years 5–8 after planting; however, the growth of the stump-planted teak in the ninth year was higher than for the coppice. The MAIdbh values of coppice and stump-planted teak were not significantly (p > 0.05) different. The results showed that CAIdbh at age 5 yr can be used as a silvicultural guide to increase the yield of teak coppice.

      PubDate: 2017-10-26T15:08:26Z
      DOI: 10.1016/j.anres.2016.12.009
  • Dragon Fruit Peel Pectin: Microwave-Assisted Extraction and Fuzzy

    • Authors: Nudthapong Tongkham; Boonyawee Juntasalay; Patareeya Lasunon; Nipaporn Sengkhamparn
      Abstract: Publication date: Available online 19 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Nudthapong Tongkham, Boonyawee Juntasalay, Patareeya Lasunon, Nipaporn Sengkhamparn
      Dragon fruit peels were used as a material for pectin extraction. Microwave-assisted extraction (MAE) using powers of 300, 450 or 600 W and heating times of 5 or 10 min were investigated. Compared to the conventional method, the MAE method produced a higher yield of pectin, with the highest pectin yield (23.11%) being obtained using a microwave power of 600 W and a heating time of 10 min. However, during the MAE extraction, the degradation of pectin may have occurred which resulted in a drop in viscosity. The fuzzy assessment method (FAM) was applied to determine suitable conditions for MAE. The highest overall performance index obtained from FAM indicated that a microwave power of 450 W and an extraction time of 5 min were suitable conditions to produce a high pectin quantity with less degradation. Moreover, the anhydrouronic acid content, degree of esterification and the Fourier-transform infrared spectrum of MAE pectin did not differ from the conventional pectin and therefore, the extract could be categorized as a high methoxyl pectin.

      PubDate: 2017-10-26T15:08:26Z
      DOI: 10.1016/j.anres.2017.04.004
  • Casing layer and effect of primordia induction in the production of
           Agaricus subrufescens mushroom

    • Authors: Emerson Tokuda Martos; Diego Cunha Zied; Pedro Paulo Gadoni Junqueira; Danny Lee Rinker; Romildo Da Silva; Rômulo César Clemente Toledo; Eustáquio Souza Dias
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Emerson Tokuda Martos, Diego Cunha Zied, Pedro Paulo Gadoni Junqueira, Danny Lee Rinker, Romildo Da Silva, Rômulo César Clemente Toledo, Eustáquio Souza Dias
      Agaricus subrufescens growers have faced difficulties in standardizing and maintaining optimal production yield, even when they produce or acquire quality substrate, as cultivation success is also related to the quality of the casing layer and the production environment. The production of A. subrufescens was evaluated using different casing layers and methods for primordia induction. Three experiments were carried out: 1) to evaluate the effect of dolomitic limestone in the casing layer; 2) to evaluate the effect of different combinations of mineral and organic materials used as the casing layer; and 3) to evaluate the effect of temperature in primordia induction with two commercial strains. The results demonstrated that an increase in the limestone concentration in the casing resulted in a superior yield (16.7%). Casing layer combinations using coconut fiber + sand (proportion 1:1, volume to volume) resulted in a greater yield (19.2%). Temperature did not affect primordia induction.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.04.003
  • Cultivation of Harpacticoid Copepods (Families Harpacticidae and
           Laophontidae) Under Selected Environmental Conditions

    • Authors: Porntep Punnarak; Padermsak Jarayabhand; Ajcharaporn Piumsomboon
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Porntep Punnarak, Padermsak Jarayabhand, Ajcharaporn Piumsomboon
      The objective of this study was to find the optimal conditions for harpacticoid copepod cultivation at the laboratory scale. Harpacticoid copepods were collected from the macroalgae, Padina sp. and Amphiroa sp., and used to study the effects on their survival rates of temperature, salinity, diet, substratum and initial density. Mixed cultures of the dominant harpacticoid copepods (Families Harpacticidae and Laophontidae), were used for subsequent experiments. After 7 d, copepods reared at 30°C showed the highest mean (±SE) survival rate (46.67 ± 5.85%; p < 0.05), followed by the copepods cultivated at 25°C and 35°C, respectively. Harpacticoid copepods could survive in brackish water to hyper-saline water, between 10 practical salinity units (psu) and 40 psu, but not in freshwater (p < 0.05). In addition, they also showed favorable results with salinity at 27 psu and 30 psu with mean survival rates of 44.72 ± 6.35% and 42.78 ± 4.94%, respectively, which were higher than the mean survival rate of 26.67 ± 13.33% recorded in salinity at 10 psu (p < 0.05). The feeding experiment was inconclusive since there were no significant differences between the survival rates of copepods on the different algal diets. On the other hand, copepods fed with commercial shrimp feed had the mean lowest survival rate (p < 0.05). No significant differences among the different sediment types were observed. However, harpacticoid copepods showed a preference for smaller-sized particles as higher survival rates were obtained for copepods reared in sand-silt sediment rather than in fine sand, coarse sand, vermiculite (artificial sediment) and no substrate. Culture at low densities such as 100 individuals/L and 500 individuals/L is suggested for initial cultivation based on this experiment.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.05.002
  • Comparison of Vavoua, Malaise and Nzi traps with and without attractants
           for trapping of Stomoxys spp. (Diptera: Muscidae) and tabanids (Diptera:
           Tabanidae) on cattle farms

    • Authors: Sarinyarat Tunnakundacha; Marc Desquesnes; Roungthip Masmeatathip
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Sarinyarat Tunnakundacha, Marc Desquesnes, Roungthip Masmeatathip
      Insect traps can be used to monitor or collect haematophagous insects. The objective of this study was to compare the efficacy of three insect traps (Vavoua, Malaise and Nzi traps) on two cattle farms in Thailand. In addition, a comparison of olfactive attractants was carried out in pasture. Vavoua traps caught significantly (p <0.05) higher numbers of Stomoxys spp. than Malaise and Nzi traps, respectively, with daily means of 69.7±13.6, 31.3±26.6 and 32.3±25.8 stomoxes flies in a stable area in Nakhon Pathom province and 79.67±23.71, 46.67±21.55 and 58.33±24.11 in pasture in Kanchanaburi province. Conversely, Nzi traps caught significantly more tabanids than Malaise and Vavoua traps on both farms. The mean daily numbers of insects caught using traps baited with cow urine mixed with dry straw (CUS) significantly increased in Vavoua, Malaise and Nzi traps, respectively, by 2.2±0.9, 1.6±0.5 and 1.8±0.6 for stomoxes flies, and by 3.6±1.8, 3.3±1.7 and 1.8±0.4 for tabanids. Vavoua and Nzi traps baited with CUS could be used on farm and in pasture to contribute to respective reductions in stomoxes and tabanids adult, biting-fly populations.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.07.002
  • Characteristic of sausages as influenced by partial replacement of pork
           back-fat using pre-emulsified soybean oil stabilized by fish proteins

    • Authors: Nopparat Cheetangdee
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Nopparat Cheetangdee
      Substitution of animal fat with oils rich in n-3 is a feasible way to improve the nutritive value of comminuted meat product. The effect on the characteristics of sausages was investigated of partial replacement of porcine fat with soybean oil (SBO) using a pre-emulsification technique. Fish protein isolate (FPI) produced from yellow stripe trevally (Selaroides leptolepis) was used as an emulsifier to prepare pre-emulsified SBO (preSBO), and its concentration effect (1%, 2% and 3%, w/v) was observed in comparison with soy protein isolate (SPI). Substitution of porcine fat using preSBO enhanced the product stability. SPI exhibited better emulsifying ability than FPI. However, FPI was more effective at reinforcing the protein matrix of the sausages than SPI, as suggested by a lowered cooking loss and the restored textural attributes of the sausages formulated with FPI stabilized preSBO. The effective concentration of FPI to improve the product stability was 2%. This work suggested that FPI was promising in the preparation of emulsified meat products.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.04.006
  • Effects of altrenogest treatment in sows on the variation of piglet birth
           weight and pre-weaning piglet performance

    • Authors: Supatee Kitkha; Alongkot Boonsoongnern; Nattavut Ratanavanichrojn; Pichai Jirawattanapong; Anuchai Pinyopummin
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Supatee Kitkha, Alongkot Boonsoongnern, Nattavut Ratanavanichrojn, Pichai Jirawattanapong, Anuchai Pinyopummin
      The effect of altrenogest (ALT) feeding combined with induced ovulation by human chorionic gonadotropin (hCG) in sows was evaluated on piglet birth weight (BW) variation and pre-weaning performance. Sows were divided into four groups: the control (no ALT; without hCG induction; artificial inseminated (AI) at 12 and 36 h after estrus; n = 40), ALT+hCG72 (ALT 20 mg/d, D-4–D2 (D0: weaning day); hCG 750 IU at 72 h post AG; AI at 24 and 40 h after hCG; n = 41), ALT+hCG96 (ALT 20 mg/d, D-4–D2; hCG 750 IU at 96 h post ALT; AI at 24 and 40 h after hCG; n = 41) and ALT+no hCG (20 mg/d, D-4–D2; without hCG induction; AI at 12 and 36 h after estrus; n = 41). The results revealed that piglet BW was not different among the groups (p > 0.05). However, the standard deviation of piglet BW (SDBW) was lower in ALT+hCG72 (0.32 ± 0.02 kg; p = 0.032), compared to ALT+hCG96 (0.40 ± 0.02 kg) and ALT+no hCG (0.40 ± 0.02 kg), except for the control (0.39 ± 0.02 kg). In addition, the pre-weaning mortality rate (%PWM) due to underweight elimination at weaning (below 3.50 kg) was decreased in ALT+hCG72 (8.33%) compared to the control (32.50%; p = 0.007) but similar to ALT+hCG96 (10.71%) and ALT+no hCG (24.05%). Therefore, ALT+hCG72 treatment in sows could reduce piglet BW variation and the number of piglets eliminated at weaning.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.02.006
  • Prevalence and risk factors associated with Dirofilaria immitis infection
           in dogs and cats in Songkhla and Satun provinces, Thailand

    • Authors: Ketsarin Kamyingkird; Witchuta Junsiri; Witsanuwat Chimnoi; Chanya Kengradomkij; Sinsamut Saengow; Keplee Sangchuto; Wicha Kajeerum; Decha Pangjai; Burin Nimsuphan; Tawin Inpankeaw; Sathaporn Jittapalapong
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Ketsarin Kamyingkird, Witchuta Junsiri, Witsanuwat Chimnoi, Chanya Kengradomkij, Sinsamut Saengow, Keplee Sangchuto, Wicha Kajeerum, Decha Pangjai, Burin Nimsuphan, Tawin Inpankeaw, Sathaporn Jittapalapong
      To update the microfilaria infection in companion animals, this study determined the prevalence and risk factors of microfilaria infection in dogs and cats collected from eight districts in Songkhla and Satun provinces, southern Thailand. In total, 482 samples (394 dogs and 88 cats) were subjected to microscopic examination (ME), polymerase chain reaction (PCR) and sequencing analysis. The overall prevalence of microfilaria infection in dogs and cats was 24.1% (95/394) and 36.4% (32/88) using PCR, respectively. Furthermore, the overall results were positive 7.7% (37/482) using ME compared to 26.3% (127/482) using PCR. Sequencing analysis of all positive PCR products identified the microfilaria as Dirofilaria immitis. D. immitis infection in each sampled district of Songkhla and Satun provinces was in the range 0–48% for dogs and in the range 15.4-75% for cats. Risk factor analysis showed that there was significantly higher D. immitis infection in dogs older than 2 yr. The study updated the prevalence of D. immitis infection in dogs and cats in two southern provinces of Thailand and there was a high D. immitis infection rate in old dogs (aged > 2 yr).

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.05.003
  • Effects of feeding frequency on growth performance and digestive enzyme
           activity of sex-reversed Nile tilapia, Oreochromis niloticus (Linnaeus,

    • Authors: Karun Thongprajukaew; Satit Kovitvadhi; Uthaiwan Kovitvadhi; Pichanpop Preprame
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Karun Thongprajukaew, Satit Kovitvadhi, Uthaiwan Kovitvadhi, Pichanpop Preprame
      The effects were investigated of different feeding frequencies—one meal (at 0600 hours, two meals (at either 0600 hours and 1200 hours or 0600 hours and 1800 hours) and three meals daily (at 0600 hours, 1200 hours and 1800 hours)—on the growth performance, digestive enzyme activity, muscle quality and carcass composition of sex-reversed fingerlings of Nile tilapia, Oreochromis niloticus (Linnaeus, 1758), in a recirculating aquaculture system over a 3 mth period. The experiment involved four replicates following a completely randomized design with 30 fish per replication. The growth performance of the fish fed twice daily at 0600 hours and 1800 hours and three times daily were similar (p > 0.05) and were higher than for the other treatments. There were no significant differences among the feed conversion ratios of all treatment groups over the 3 mth period. The specific activities of digestive enzyme, amylase, lipase, total proteases, trypsin and the ratios of trypsin to chymotrypsin and amylase to trypsin were similar among feeding frequencies. There was a significant decrease in the chymotrypsin specific activity in fish fed less often compared to the three-meals-daily group. The muscle quality and carcass composition were not affected by feeding frequencies, except for the muscle RNA. These results suggested a superior growth capacity of tilapias fed twice daily (0600 hours and 1800 hours) which may be of practical use in feeding management for tilapia farming.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.04.005
  • Effect of environmental conditions on flower induction of marian plum
           (Bouea burmanica Griff)

    • Authors: Vusie L. Mavuso; Chinawat Yapwattanaphun
      Abstract: Publication date: Available online 14 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Vusie L. Mavuso, Chinawat Yapwattanaphun
      Marian plum flowering naturally occurs during the cool, dry season so Thailand farmers usually withdraw irrigation a month before flowering. However, irregular flowering continues to be a serious problem. This study investigated the effects of environmental conditions (air temperature, soil moisture and relative humidity) on flower induction of marian plum. Daily weather data were collected using weather stations in three orchards where flowering was also recorded. Thirty representative trees per orchard were randomly selected for data collection. The results showed that trees from all orchards flowered in response to low temperature (below 18o C) despite different levels of water stress and relative humidity. These results indicated that soil moisture content and relative humidity had no influence on marian plum flower induction but enhanced flower bud development. Night temperatures of 18o C or lower are essential for marian plum flower induction.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.01.004
  • Low Frequency Tapping Systems Applied to Young-tapped Trees of Hevea
           brasiliensis (Willd. ex A. Juss.) Müll. Arg. in Southern Thailand

    • Authors: Thongchai Sainoi; Sayan Sdoodee; Regis Lacote; Eric Gohet
      Abstract: Publication date: Available online 14 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Thongchai Sainoi, Sayan Sdoodee, Regis Lacote, Eric Gohet
      A declining rubber price and labor shortages in the context of climate variability are problems for rubber smallholders. A low frequency tapping system that may be a solution to these problems was tested in southern Thailand using eight-year-old trees of the RRIM600 clone at the Thepa Research Station, Songkhla province. The experimental design was a randomized complete block with five treatments defined in and abbreviated to: T1: S/3 d1 2d/3; T2: S/2 d2; T3: S/2 d3 ET 2.5% Pa1(1) 8/y (m); T4: S/3 d2 ET 2.5% Pa1(1) 4/y (m); and T5: S/3 d3 ET 2.5% Pa1(1) 12/y (m). There were three replications (elementary plot) with 10 trees per treatment in each elementary plot. The results showed that low frequency tapping systems (d3) with stimulation resulted in an equivalent yield in cumulative latex production compared with the other tapping systems and also had higher latex production per tapping. Bark consumption was less in the low frequency tapping systems leading to the possibility of lengthening the economic lifespan of the tapping panels of the tree. A low frequency tapping treatment with stimulation eight times per year induced decreases in the total solids, sucrose and reduced thiol contents; however, the inorganic phosphorus content increased, as is usually seen with the use of ethylene stimulation. The response of rubber trees to a low frequency tapping system should now be tested in the long term.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.03.001
  • TOC

    • Abstract: Publication date: June 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 3

      PubDate: 2017-09-04T00:07:10Z
  • Evaluation of horticultural traits and seed germination of Tacca
           chantrieri ‘André

    • Authors: Krisantini; Ni Made Armini Wiendi; Endah Retno Palupi
      Abstract: Publication date: Available online 21 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Krisantini, Ni Made Armini Wiendi, Endah Retno Palupi
      Tacca chantrieri André is a perennial plant belonging to the Taccaceae family. T. chantrieri is known as the ‘bat flower’ or ‘bat plant’ due to its unique black bracts that resemble bats. It has the potential to be commercialized as an indoor, flowering, ornamental plant due to its unique flower morphology and shade tolerance. The distribution of T. chantrieri in its natural habitat has contracted due to land clearing and habitat destruction to the extent that it is now very hard to find in its traditional natural environment. The objectives of this study were to evaluate the morphological characteristics of T. chantrieri, to evaluate seed germination in vivo and in vitro, and in vitro culture of the plant using standard Murashige and Skoog (MS) media. Only 10% of the seeds germinated in 22 wk. An evaluation of the non-germinated seed showed that 42% of the seeds did not have embryos. In vitro culture using the standard MS media resulted in 3–7 new shoots growing from the basal parts of the seedlings after 22 wk, and each shoot further developed 4–7 shoots following transfer to MS media supplemented with indole acetic acid (IAA) at 0.25–0.75 mg/L and N6-benzyladenine (BA) at 1–2 mg/L. These results indicate that even though propagation protocols should be further developed, in vitro propagation using standard MS media supplemented with combinations of IAA and BA provides a more effective way to propagate T. chantrieri when compared to the conventional propagation techniques. This information will be useful for introducing T. chantrieri to the new ornamental plant market and to conservation efforts for this species.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2016.12.006
  • Growth variation and heritability in a second-generation Eucalyptus
           urophylla progeny test at Lad Krating Plantation, Chachoengsao province,

    • Authors: Lucky Nhlanhla Dlamini; Damrong Pipatwattanakul; Somporn Maelim
      Abstract: Publication date: Available online 21 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Lucky Nhlanhla Dlamini, Damrong Pipatwattanakul, Somporn Maelim
      In Thailand, Eucalyptus urophylla was introduced with the main purpose of supplying raw material for pulp and chip wood production. The demand for genetically improved seed is increasing to support high productivity plantation establishment. One of the tree improvement activities established to meet the high demand for improved seed was a second generation progeny test at Lad Kranting Plantation, Thailand to provide the best material for the successful plantation program. The aim of the current study was to compare growth variation of the first and second generation of Eucalyptus urophylla progeny that could provide information on suitable families for improved quality seed. The progeny test comprised the best 45 half-sib families selected from 80 half-sib families of the first-generation progeny test. The design of the progeny test was a randomized and complete block design (16 trees/plot × 45 plots/block × 9 blocks), with 4 rows of 4 trees at a spacing of 2 m × 1 m. Growth was assessed at age 3 yr. The average height and diameter at breast height over bark (DBH), was 13.72 m, and 8.75 cm, respectively. There were highly significant (p < 0.01) differences among provenances and families in both height and DBH. The individual heritability values for height and DBH were 0.48 and 0.60, respectively. The family heritability values for height and DBH were 0.98 and 0.99, respectively. These 45 half-sib families proved to be genetically superior ensuring higher productivity and contributing to the success of the Forest Industry Organization plantation at Lad Krating.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2016.12.005
  • Effects of altitude and harvesting dates on morphological characteristics,
           yield and nutritive value of desho grass (Pennisetum pedicellatumTrin.) in

    • Authors: Bimrew Asmare; Solomon Demeke; Taye Tolemariam; Firew Tegegne; Aynalem Haile; Jane Wamatu
      Abstract: Publication date: Available online 21 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Bimrew Asmare, Solomon Demeke, Taye Tolemariam, Firew Tegegne, Aynalem Haile, Jane Wamatu
      The effects of altitude and harvesting period on the performance of desho grass were evaluated in Ethiopia. A factorial arrangement of treatments was employed with a combination of two altitudes and three harvesting dates. Planting and management of desho grass was undertaken according to recommendations for the species. The data collected consisted of plant height, number of tillers, number and length of leaves, leaf-to-stem ratio and fresh yield. Chemical analysis of the constituents of desho grass samples was completed according to standard procedures. All data were subjected to two analysis of variance procedures and Pearson correlation analysis, with significance tested at p<0.05.Results indicated that most morphological characteristics were not significantly different due to altitude except the leaf length per plant. Harvesting dates significantly affected the number of leaves per plant, leaf-to-stem ratio and dry matter yield. Both altitude and harvesting date significantly affected the crude protein content, yield and fiber fractions. Calcium content was significantly different only regarding harvesting date and phosphorus content was significantly affected by altitude. Dry matter content and yield were positively correlated with parameters such as plant height, leaf length per plant, crude protein (CP) yield, fiber fractions (neutral detergent fiber and acid detergent fiber) and with each other. Crude protein content was positively correlated with the CP yield. Overall results indicated that desho grass was affected more by harvesting date than altitude. Generally, desho grass performed well both at mid and high altitude in Ethiopia and could be a potential livestock feed in the country.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2016.11.001
  • Evaluation of vetiver grass for radiocesium absorption ability

    • Authors: Nualchavee Roongtanakiat; Thunyaras Akharawutchayanon
      Abstract: Publication date: Available online 21 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Nualchavee Roongtanakiat, Thunyaras Akharawutchayanon
      Plantlets of the Surat Thani and Ratchaburi ecotypes of vetiver grass (Chrysopogon zizanioides L. (Roberty). were hydroponically cultured in 134Cs solutions to investigate their 134Cs uptake ability. After 5 d of culture in 134Cs solutions, the Surat Thani plantlets were still fresh and healthy without any evidence of toxicity symptoms, while the Ratchaburi plantlets were rather dry with some brown leaves. The information from the radiographic images and photo-stimulated luminescence (PSL) signals as well as the specific activity of cesium indicated that the Surat Thani plantlets cultured in 134Cs solutions were significantly superior to the Ratchaburi vetiver plantlets with regard to 134Cs absorption ability. The increase in the amount of 134Cs in the vetiver plantlets with the level of 134Cs in the culture solution was clearly demonstrated from the PSL signal, as the relationship between the PSL per square millimeter values and 134Cs solution concentrations was linear. The data also indicated that both studied vetiver ecotypes accumulated more 134Cs in the roots than in shoots; therefore, vetiver might be suitable for phytostabilization of radiocesium-polluted soil. The Surat Thani vetiver plantlets were cultured in 134Cs solution with a concentration of 5 MBq/L for different periods. The results of the radiographic image, PSL signals and the radioactivity levels in the vetiver samples strongly indicated that vetiver could absorb a greater amount of 134Cs when the period of culture was longer. After vetiver culture periods of 3 d, 6 d, 9 d, 12 d, 15 d and 18 d, the activity of 134Cs in the cultured solutions declined to 98.0%, 93.2%, 88.6%, 78.1%, 70.7% and 65.5%, respectively. These values indicated that vetiver could remediate 134Cs in the cultured solution by 2.0%, 6.8%, 11.4%, 21.9%, 29.3% and 34.5% for the respective durations.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2017.01.002
  • Optimization of coffee oil extraction from spent coffee grounds using four
           solvents and prototype-scale extraction using circulation process

    • Authors: Krit Somnuk; Pichai Eawlex; Gumpon Prateepchaikul
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Krit Somnuk, Pichai Eawlex, Gumpon Prateepchaikul
      The optimization of two parameters—espresso coffee oil extraction time and the ratio of dried spent coffee grounds (DSCG)-to-solvent—were conducted on DSCG employing four solvents. Extracted yields were investigated using response surface methodology. The two independent variables—ratio of DSCG-to-solvent (5.1–24.9 g/g) and extraction time (0.2–39.8 min)—were optimized in the batch mode. The predicted model was verified using actual experiments. The experimental yields achieved were 14.7 percent by weight (wt%; using hexane), 13.1 wt% (using anhydrous ethanol), 11.8 wt% (using hydrous ethanol), and 7.5 wt% (using methanol). Prototype extraction was tested using a circulation process. Approximately 11.8 wt% oil yield of prototype extraction could be obtained from DSCG under the optimal conditions of 30.4 min extraction time and 22.5 g/g ratio of DSCG-to-hexane from the laboratory-scale results. In this study, the miscella (the solution of coffee oil dissolved in the solvent) from up to six successive extractions was investigated to determine the optimal oil extraction process. The repeated miscella from each successive extraction showed high efficiency and stability of coffee oil yield similar to that obtained using fresh hexane.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2017.01.003
  • Cathepsin activities and thermal properties of Nile tilapia (Oreochromis
           niloticus) meat during ambient storage

    • Authors: Tulakhun Nonthaput; Waraporn Hahor; Karun Thongprajukaew; Krueawan Yoonram; Somrak Rodjaroen
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Tulakhun Nonthaput, Waraporn Hahor, Karun Thongprajukaew, Krueawan Yoonram, Somrak Rodjaroen
      Understanding the postmortem changes at ambient aquatic temperature can be useful for estimating the time of death in environmental forensic studies when little information is available. Muscle degradation was investigated in Nile tilapia (Oreochromis niloticus) in terms of the specific activities of cathepsins (B, H and L) and the scavenging activities and thermal transition properties of myosin and actin, to assess postmortem changes with time (0, 1, 2, 4, 8, 12, 24 and 48 hr after death). The study results are relevant to ambient temperatures in Thailand, (about 30oC). The specific activities of the three cathepsin enzymes increased significantly with postmortem time (p < 0.05) and had a highly significant positive relationship (r = 0.987–0.997, p < 0.01, n = 32). Cathepsin H had the lowest specific activity and exhibited a different type of time profile. Its lowest specific activity was observed at 8 hr, which indicated a significant role at this point in time after death. The radical scavenging activities substantially decreased with the time since death, especially within the first 1 hr, while no changes occurred from 2–8 hr, or from 12–24 hr. The thermal properties of myosin and actin were observed up to a 24 hr delay. The degradation of each protein fluctuated with the delay time; actin was more sensitive to postmortem delay than myosin. Overall, the findings from the current study might be used as primary data to estimate the time of death of an aquatic animal. A potential application is for environmental forensics in relation to fish kill events associated with pollution crimes or the mass death of exported fish under transportation insurance, as well as in animal cruelty investigations.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2017.02.005
  • Solubility curve of rock powder inoculated with microorganisms in the
           production of biofertilizers

    • Authors: Valéria Nogueira da Silva; Luiz Eduardo de Souza Fernandes da Silva; Apolino José Nogueira da Silva; Newton Pereira Stamford; Gorete Ribeiro de Macedo
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Valéria Nogueira da Silva, Luiz Eduardo de Souza Fernandes da Silva, Apolino José Nogueira da Silva, Newton Pereira Stamford, Gorete Ribeiro de Macedo
      The study was conducted at the Biochemistry Engineering Laboratory of the Federal University of the Rio Grande do Norte to verify the efficacy of microorganisms as solvents of apatite and biotite rock powder to enable the availability and rapid production of biofertilizers. Bacteria Paenibacillus polymyxa, Ralstonia solanacearum, Cromobacterium violaceum and Acidithiobacillus thiooxidans and fungi Penicillium fellutanum and Tricoderma humatum were inoculated into biotite rock powder and apatite rock powder originating from the States of Paraíba and Paraná, respectively, in Brazil. Rock powder samples were taken on Petri plates, 10% sulfur was added to each, and were subsequently inoculated and co-inoculated for a period of 72 days. Every 12th day, the samples were withdrawn and their mineral release curve was studied. From our results, the co-inoculations with Paenibacillus polymyxa + Ralstonia solanacearum and Paenibacillus polymyxa + Cromobacterium violaceum rendered higher solubility of K and P, respectively, at 36 days.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2017.01.001
  • Instrumental neutron activation analysis to determine inorganic elements
           in paddy soil and rice and evaluate bioconcentration factors in rice

    • Authors: Prapamon Seeprasert; Patana Anurakpongsatorn; Sirinart Laoharojanaphand; Arporn Busamongkol
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Prapamon Seeprasert, Patana Anurakpongsatorn, Sirinart Laoharojanaphand, Arporn Busamongkol
      Increased anthropogenic activity, especially in thriving industries and mining activity, has led to the accumulation of inorganic elements in the soil. This study applied neutron activation analysis for the determination of inorganic element concentrations in paddy soils and quantified the nutrient value of paddy rice cultivated on various agricultural sites throughout Thailand. The determination accuracy of the elements U, As, Sb, W, Mn, K, La, Cr, Hf, Cs, Sc, Fe, Co, Cd and Zn was assessed using National Institute of Standards and Technology standard reference materials; the results were satisfactory, showing low relative error. High analytical precision was also observed. Cadmium was selected to check the linearity of the calibration curve against a Cd standard. For a calibration curve in the range 1–9 μg, a correlation coefficient of 0.997 was found. Trace amounts of U, As, Sb, W, Mn, K, La, Cr, Hf, Cs, Sc, Fe, Co, Zn and Cd were also found in the soil samples. However, the Co, Cd, and Zn concentrations were especially high in agricultural sites in Tak province. The elemental concentrations in rice followed the order K > Zn > Mn. The data obtained are of potential benefit for the development of trace element supplementation in food.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2016.09.005
  • Cloning and comparative analysis of zinc-finger protein gene on
           Y-chromosome (ZFY) between Thai Bangkaew dog and other Thai canids

    • Authors: Ukadej Boonyaprakob; Sommai Homsavart; Jatuporn Noosud; Rongdej Tungtrakanpoung
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Ukadej Boonyaprakob, Sommai Homsavart, Jatuporn Noosud, Rongdej Tungtrakanpoung
      The Thai Bangkaew dog is a Spitz-type dog that originated in Thailand. Legend has it that the dog is descended from hybrids between a native female dog and a male wild canid. To examine the mysterious story about the ancestry of the Thai Bangkaew dog's paternal lineage, sequence variation was examined for the last intron of the Y-chromosome-specific zinc-finger gene, ZFY, and its X homolog for male Thai Bangkaew dogs and other male Thai canids, including the Thai ridgeback and mixed breed dogs, Asiatic jackals (Canis aureus) and a dhole (Cuon alpinus). A 1,075-bp ZFY segment from DNA samples of Thai Bangkaew dogs was found to be 100% identical to the domestic dog ZFY and (if gaps are allowed) showed 81% and 92% identity to jackal ZFY and dhole ZFY, respectively. However, if gaps were treated as missing data, the 1,045-bp ZFY sequence for the Thai Bangkaew dogs was 100% identical to domestic dog ZFY and 99.5% to jackal ZFY and dhole ZFY, respectively. In addition, the 959-bp Thai Bangkaew ZFX fragments were identical and showed 100% identity to domestic dog ZFX. These genetic data suggest that the Thai Bangkaew dogs still present today share a common male ancestor with modern dogs, rather than being the descendants of dhole or jackal/dog hybrids.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2016.12.007
  • Genome-wide association study for lactation characteristics, milk yield
           and age at first calving in a Thai multibreed dairy cattle population

    • Authors: Pimchanok Yodklaew; Skorn Koonawootrittriron; Mauricio A. Elzo; Thanathip Suwanasopee; Thawee Laodim
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Pimchanok Yodklaew, Skorn Koonawootrittriron, Mauricio A. Elzo, Thanathip Suwanasopee, Thawee Laodim
      A genome-wide association study was performed for milk yield per lactation (MY), initial yield (IY), peak yield (PY), persistency (PS) and age at first calving (AFC) in a Thai multibreed dairy cattle population. The dataset contained 1,305 first-lactation cows raised on 188 farms located in Central, Northeastern and Southern Thailand. Cows were genotyped with GeneSeek Genomic Profiler low-density bead chips (8,810 single nucleotide polymorphism [SNP]; n = 1,255) and with high-density bead chips (76,883 SNP; n = 50). The single SNP association analyses utilized 8,096 SNPs in common between the low and high density GeneSeek chips. The mixed model contained the fixed effects of contemporary group, fraction of non-Holstein breeds, age at first calving and gene content, and the random effects of animal and residual. Computations were done with the QXPAK.5 software. The number of SNPs associated with MY, IY, PY, PS and AFC at the significant threshold level of p < 0.00001 were 75, 102, 145, 74 and 24, respectively. Of the 366 SNP markers significantly associated with the studied traits, 54 (14.75%) were associated with two traits and 312 (85.25%) with only one trait, and all but one of the 54 SNPs associated with two traits affected MY and lactation characteristics. Genetic improvement of Thai dairy cows for lactation characteristics, milk yield and age at first calving could be aided by selecting animals with the SNP markers found to be highly associated with genes influencing these traits.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2017.04.002
  • Effect of nitrogen concentration on growth, lipid production and fatty
           acid profiles of the marine diatom Phaeodactylum tricornutum

    • Authors: Natthawut Yodsuwan; Shigeki Sawayama; Sarote Sirisansaneeyakul
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Natthawut Yodsuwan, Shigeki Sawayama, Sarote Sirisansaneeyakul
      The marine diatom, Phaeodactylum tricornutum had a high lipid content accumulation under photoautotrophically nitrogen-deficient cultivation. The lipid content (Y P/X; 53.04 ± 3.26%) was highest with a specific rate of lipid production (q P; 1.50 ± 0.12 × 10-3 mg/mg hr), attained at the minimized specific growth rate (μ; 0.87 ± 0.13 × 10-2/hr) after 504 hr of cultivation. When the specific growth rate (μ; 2.47 ± 0.02 × 10-2/hr) was maximized in nitrogen-sufficient culture (32.09 mg/L NaNO3), the specific rate of lipid production (q P; 0.42 ± 0.19 × 10-3 mg/mg hr) was lowered. In this work, the nitrogen concentration with fixed phosphorus concentration was used to monitor the lipid accumulation, as the lower nitrogen concentration favored a higher lipid content percentage, compared with a higher nitrogen concentration. Under nitrogen-deficient conditions, P. tricornutum produced a large amount of saturated fatty acids, mainly as palmitic acid (C16:0), while palmitoleic acid (C16:1c) was found to be the sole unsaturated fatty acid. On the other hand, eicosapentaenoic acid (C20:5ω3c) was produced in large amounts when there was sufficient nitrogen. Since the biodiesel was qualified based on the fatty acid methyl ester composition, the oil from algae cultured under nitrogen-deficient conditions were considered to meet the biodiesel standard. Thus, P. tricornutum optimally cultivated under nitrogen-deficient conditions can accumulate a high oil content, which demonstrates its potential as a biodiesel feedstock.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2017.02.004
  • Milk Yield, Fat Yield and Fat Percentage Associations in a Thai Multibreed
           Dairy Population

    • Authors: Bodin Wongpom; Skorn Koonawootrittriron; Mauricio A. Elzo; Thanathip Suwanasopee
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Bodin Wongpom, Skorn Koonawootrittriron, Mauricio A. Elzo, Thanathip Suwanasopee
      Milk yield (MY), fat yield (FY) and fat percentage (FP) are important traits for dairy cattle selection and dairy farm profitability in Thailand. Most dairy cattle in Thailand are multibreed, comprising multiple breeds (three from eight breeds per animal). This multibreed composition of dairy animals has generated a large amount of variation in dairy traits among cows raised under farm, tropical environmental conditions across the country. Effective genetic evaluation and selection programs for dairy traits in this population require reliable variance components and genetic parameters estimated under the management, nutritional, health, and climatic conditions in Thai dairy farms. Thus, the objective of this study was to estimate genetic parameters for MY, FY and FP in a Thai dairy multibreed dairy cattle population using farm-collected information. The dataset consisted of pedigree and phenotypic data for MY, FY and FP from 6,596 first lactation cows from 687 farms. The data were analyzed using a three-trait (MY, FY and FP), animal mixed model. Fixed effects were herd-year-season, Holstein fraction, heterozygosity and age at first calving. Random effects were animal and residual. An average, information-restricted, maximum likelihood procedure was used to estimate variance components, which in turn were used to compute heritabilities and genetic correlations. Means (SD) were 4,315.43 kg (1,112 kg) for MY, 157.41 kg (50.42 kg) for FY and 3.59% (0.56%) for FP. Heritability estimates were 0.22 ± 0.06 for MY, 0.17 ± 0.06 for FY and 0.24 ± 0.07 for FP. Genetic correlations were 0.47 ± 0.16 between MY and FY, -0.30 ± 0.20 between MY and FP, and 0.30 ± 0.21 between FY and FP. These estimates of genetic parameters indicated that Thai dairy producers would achieve reasonable amounts of genetic progress if they selected dairy animals based on MY and either FY or FP.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2016.12.008
  • FM - TOC

    • Abstract: Publication date: April 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 2

      PubDate: 2017-07-18T23:02:48Z
  • Effects of Two Neck Rail Positions on Heifer’s Behavior and Stall
           Cleanliness in Free Stall Barn

    • Authors: Neng Risris Sudolar; Rapeepong Panivivat; Panwadee Sopannarath
      Abstract: Publication date: Available online 15 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Neng Risris Sudolar, Rapeepong Panivivat, Panwadee Sopannarath
      Stall usage and cleanliness are affected by stall design, which includes neck rail positions for dairy heifers. A comparison was for two neck rail positions to determine the preferences for tropical dairy heifers in a free stall barn. Twenty four crossbred Holstein pregnant heifers were divided into two groups, one using the current and the second using the new position. The current position of neck rail was placed at 160 cm from the curb at 124 cm height, whereas the new position was placed at 150 cm from the curb at 122 cm height. The comparison test was followed by a free choice test to assess preferences for one of two positions. The dairy heifers’ activity in the stall was video recorded for 7 consecutive days for each period during the comparison test, and 3 days for preference test. Stall cleanliness was assessed once daily. The results demonstrated that the dairy heifers’ behavior were not significantly different between the two positions (p > 0.05). Dairy heifers did not show any clear preferences on one of two neck rail positions. However, the rear area of stalls with new neck rail position were cleaner than those with current neck rail position (p < 0.01). Therefore, the new position of neck rail seemed suitable for tropical dairy heifers in terms of stall cleanliness.

      PubDate: 2017-06-17T12:25:21Z
      DOI: 10.1016/j.anres.2017.05.001
  • Optimum proportion of sweet corn by-product silage (SCW) and rice straw in
           total mixed ration using in vitro gas production

    • Authors: Thaintip Kraiprom; Sornthep Tumwasorn
      Abstract: Publication date: Available online 15 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Thaintip Kraiprom, Sornthep Tumwasorn
      An in vitro gas technique was used to study the effects of different proportions of sweet corn by-product silage (SCW) and rice straw (RS) on in vitro fermentation. The dietary treatments were ratios of SCW and RS all on a on a dry matter (DM) basis: T1 = SCW: RS at 60:40; T2 = SCW: RS at 50:50; and T3 = SCW:RS at 40:60. The ration of concentrate and roughage was 60:40 on a DM basis. The DM, crude protein (CP), ether extract (EE), acid detergent fiber (ADF) and neutral detergent fiber (NDF) of SCW were 22.56, 7.11, 1.89, 41.34 and 78.45%, respectively. The results showed that cumulative gas production at 48 hr and 72 h after incubation with the ratio of SCW to RS at 60:40 on a DM basis was significantly (p < 0.05) higher than the results from the ratio of SCW to RS at either 50:50 or 40:60 on a DM basis. The proportion of SCW and RS among treatments had no effect on true digestibility parameters. However, the in vitro organic matter digestibility parameters in the treatment group with SCW:RS at 60:40 on a DM basis were higher (p < 0.05) than in the other two treatments. The total volatile fatty acid in the treatment group with SCW:RS at 50:50 and 40:60 on a DM basis were higher (p < 0.05) than in the treatment group with SCW:RS at 60:40 on a DM basis. Acetic acid (C2), propionic acid (C3) butyric acid (C4) and the proportion of C2:C3 were not different (p < 0.05) among treatments. The levels of NH3-N in all groups were not significant (p < 0.05) among treatments. It was concluded that the optimum level of SCW:RS was 60:40 on a DM basis.

      PubDate: 2017-06-17T12:25:21Z
      DOI: 10.1016/j.anres.2016.10.007
  • Evaluation of incense-resinous wood formation in agarwood (Aquilaria
           malaccensis Lam.) using sonic tomography

    • Authors: Nadya Putri; Lina Karlinasari; Maman Turjaman; Imam Wahyudi; Dodi Nandika
      Abstract: Publication date: Available online 14 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Nadya Putri, Lina Karlinasari, Maman Turjaman, Imam Wahyudi, Dodi Nandika
      Incense-resinous wood of agarwood is a high-value non-timber forest product found in the trunk or branches of Aquliaria and Gyrinops species. Incense-resinous wood of agarwood is formed as a response to tree damage caused by wounding or fungal attack. Detection of such wood in trees has generally been carried out based on natural signs such as dark spots or black marks when peeling back tree bark, but these often yield uncertain results. Sonic tomography can be applied to predict the presence of incense-resinous wood in standing trees. The objective of this study was to evaluate sonic tomography at various trunk heights based on variations in the sound velocity associated with the presence of incense-resinous wood. Ten agarwood trees (Aquilaria malaccensis) were selected for this study; five trees were artificially inoculated with Fusarium solani fungus and the other five were untreated. The results showed that the height of the measurement did not significantly affect the propagation velocity of sound waves or the tomographic results. Sonic tomography revealed that prediction of the deteriorated zone which is indicative of incense-resinous wood formation was 1.1% greater in inoculated trees than in uninoculated trees.

      PubDate: 2017-06-17T12:25:21Z
      DOI: 10.1016/j.anres.2016.08.009
  • Effects of Malachite Green on Growth and Tissue Accumulation in Pak Choy
           (Brassica chinensis Tsen & Lee)

    • Authors: Piyaporn Matpang; Manop Sriuttha; Narumol Piwpuan
      Abstract: Publication date: Available online 10 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Piyaporn Matpang, Manop Sriuttha, Narumol Piwpuan
      Reuse for agricultural purposes of aquaculture wastewater containing high levels of nutrients can be integrated into a water management strategy, in order to conserve water and alleviate water pollution problems. However, rather than nutrients, some contaminants in aquaculture wastewater may pose detrimental effects on plants being nourished. This study assessed the growth and accumulation of toxic substances of Brassica chinensis in response to Malachite Green (MG)-contaminated water. Plant seedlings were hydroponically grown with MG at 1 mg/L, 2 mg/L or 4 mg/L under ambient air conditions in the laboratory for 4 wk. Growth parameters—the number of leaves, plant height, leaf length and width, root length and dry mass of the plants—were compared with plants grown without MG (control). The concentrations at 2 mg/L and 4 mg/L affected the growth of the plants as measured by leaf length, plant height and leaf width generally to a lesser degree than the control plants and those grown at 1 mg/L MG (p < 0.05). The roots of plants were clearly affected by MG (average root length = 14.00 ± 1.17 cm, 14.50 ± 3.91 cm, 7.17 ± 1.52 cm and 6.58 ± 0.94 cm for plants from the control and treatments with MG at 1 mg/L, 2 mg/L and 4 mg/L, respectively, p < 0.001). The dry mass of treated plants (average dry mass = 1.22 ± 0.48 g/plant, 1.17 ± 0.27 g/plant and 0.86 ± 0.17 g/plant for treatments of MG at 1 mg/L, 2 mg/L and 4 mg/L, respectively) were lower than that of control plants (1.80 ± 0.73 g/plant) (p < 0.001). The increase in the oxalate content in the plant shoots suggested that the plants may accumulate substances that could be harmful to human health. Based on these results, it is proposed that the integration of hydroponic plant production with MG-contaminated water at a concentration not exceeding 1 mg/L can be applied without any reduction in the productivity of B. chinensis; however, the accumulation of toxic substances in plant tissues still needs to be identified.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.10.008
  • Effects of phosphorus addition on nitrogen cycle and fluxes of N2O and CH4
           in tropical tree plantation soils in Thailand

    • Authors: Taiki Mori; Chongrak Wachrinrat; Duriya Staporn; Ponthep Meunpong; Warawich Suebsai; Kazuki Matsubara; Khitja Boonsri; Warisa Lumban; Manassawee Kuawong; Thanida Phukdee; Juruwan Srifai; Kannika Boonman
      Abstract: Publication date: Available online 10 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Taiki Mori, Chongrak Wachrinrat, Duriya Staporn, Ponthep Meunpong, Warawich Suebsai, Kazuki Matsubara, Khitja Boonsri, Warisa Lumban, Manassawee Kuawong, Thanida Phukdee, Juruwan Srifai, Kannika Boonman
      An incubation experiment was conducted to test the effects of phosphorus (P) addition on nitrous oxide (N2O) emissions and methane (CH4) uptakes, using tropical tree plantation soils in Thailand. Soil samples were taken from five forest stands—Acacia auriculiformis, Acacia mangium, Eucalyptus camaldulensis, Hopea odorata, and Xylia xylocarpa—and incubated at 80% water holding capacity. P addition stimulated N2O emissions only in Xylia xylocarpa soils. Since P addition tended to increase net ammonification rates in Xylia xylocarpa soils, the stimulated N2O emissions were suggested to be due to the stimulated nitrogen (N) cycle by P addition and the higher N supply for nitrification and denitrification. In other soils, P addition had no effects on N2O emissions or soil N properties, except that P addition tended to increase the soil microbial biomass N in Acacia auriculiformis soils. No effects of P addition were observed on CH4 uptakes in any soil. It is suggested that P addition on N2O and CH4 fluxes at the study site were not significant, at least under laboratory conditions.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.03.002
  • Allelopathic effects of jungle rice (Echinochloa colona (L.)Link) extract
           on seed germination and seedling growth of rice

    • Authors: Pimjai Sitthinoi; Sukumarn Lertmongkol; Wanchai Chanprasert; Srunya Vajrodaya
      Abstract: Publication date: Available online 9 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Pimjai Sitthinoi, Sukumarn Lertmongkol, Wanchai Chanprasert, Srunya Vajrodaya
      The allelopathic effects of jungle rice were investigated on the seed germination and seedling growth of the two rice cultivars, Khao Dawk Mali 105 and RD41. Jungle rice extract with varying concentrations (0 mg/mL, 1 mg/mL, 5 mg/mL and 10 mg/mL) was prepared using three solvents (hexane, dichloromethane and methanol) from shoots and roots separately. The jungle rice extracts from the shoot part showed a higher inhibitory effect on the root length and seedling dry weight of rice compared to the extracts from the root part. Different extraction solvents caused differences in the inhibitory effect on the germination and seedling growth of rice and had an interaction with the extract concentration in all parameters measured. Methanol extraction solvent severely inhibited the seed germination of both cultivars regardless of the extract concentrations, whereas the jungle rice extracts using dichloromethane and hexane showed moderate inhibitory effects depending on the concentrations of 1–10 mg/mL, respectively. It can be concluded that jungle rice extracts contain allelopathic compounds and can inhibit the seed germination and seedling growth of rice. Methanol should be used as an extraction solvent if the inhibitory effect of the jungle rice extract is required.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.09.004
  • Antioxidant and anticancer activities of Plectranthus stocksii Hook. f.
           leaf and stem extracts

    • Authors: Kasipandi Muniyandi; Elizabeth George; Vekataramana Mudili; Naveen Kumar Kalagatur; Allen Joseph Anthuvan; Kadirvelu Krishna; Parimelazhagan Thangaraj; Gopalan Natarajan
      Abstract: Publication date: Available online 9 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Kasipandi Muniyandi, Elizabeth George, Vekataramana Mudili, Naveen Kumar Kalagatur, Allen Joseph Anthuvan, Kadirvelu Krishna, Parimelazhagan Thangaraj, Gopalan Natarajan
      The properties of Plectranthus stocksii—a well-known folk medicinal plant—were investigated. The plant extracts were successively extracted and tested for phytochemicals using high performance liquid chromatography, while antioxidant and anticancerous properties were assessed using MCF-7, Caco-2 and RAW 264.7 cancerous cell line models. The methanolic extract of leaves showed higher concentrations of total phenolics (415.41 mg gallic acid equivalents/g extract) and tannins (177.53 mg gallic acid equivalents/g extract) contents than other studied extracts. In the case of flavonoids, ethyl acetate extract of leaf (LEA) showed a higher concentration (777.11 mg rutin equivalents/g extract) and was also found to have better antioxidant activity against stable radical 2,2-diphenylpicrylhydrazyl (3.46 μg/mL), 2,2’azinobis(3-ethylbenzothiozoline-6-sulfonic acid) disodium salt radical (27.41 mM Trolox equivalent/g extract) and superoxide (24.16 μg/mL) radicals and showed better IC50 (the concentration of the sample at which the inhibition rate reaches 50%) values on MCF-7 (48.874 μg/mL) and Caco-2 (36.088 μg/mL) cancerous cell line models. The immense anti-oxidant potential of P. stocksii leaf and stem extracts could be utilized as a good source of natural, anti-oxidant supplement in food to defend against oxidative-stress-related disorders and more generally in the food safety industry.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.07.007
  • Molecular characterization and expression analysis of Cyclin B and Cell
           division cycle 2 in Gonads of Diploid and Triploid Bighead Catfish,
           Clarias macrocephalus Günther, 1864

    • Authors: Anyalak Wachirachaikarn; Wikrom Rungsin Prapansak Srisapoome Sirawut Klinbunga Uthairat Na-Nakorn
      Abstract: Publication date: Available online 24 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Anyalak Wachirachaikarn, Wikrom Rungsin, Prapansak Srisapoome, Sirawut Klinbunga, Uthairat Na-Nakorn
      This study investigated the differential expression of genes associated with reproduction in sterile triploid and normal diploid bighead catfish (Clarias macrocephalus Günther, 1864). The triploid fish were produced using cold shock and were reared in the same conditions as the diploid counterpart. The histomicrographs showed completely retarded triploid gonads across the samples aged 2–12 mth, whereas the gonads of the diploids were in developing stages during 2–4 mth, reached the early maturing stage at 6 mth, matured at 8 mth and showed signs of atresia at 10–12 mth. In parallel, the full-length cDNAs of cyclin B1 (CmCcnb1; 1539 bp in length with an open reading frame (ORF) of 1194 bp corresponding to 397 amino acids) and cell division cycle 2 (CmCdc2; 1355 bp, an ORF of 909 bp, 302 amino acids) of bighead catfish (Clarias macrocephalus Günther, 1864) were isolated. Phylogenetic analysis revealed that the newly characterized CmCcnb1 should be regarded as a member of cyclin B1 rather than cyclin B2. The expression level of CmCcnb1 mRNA was limited in different stages of the ovaries and testes of triploids. In diploid ovaries, its expression was significantly higher than that in triploid ovaries in fish aged 2 mth (513.43 ± 82.22 fold) and in fish aged 8 mth (2,430.87 ± 900.06 fold). The CmCcnb1 level in the testes of diploids was significantly greater than that in triploids in fish aged 2 mth (928.85 ± 208.72 fold). Similarly, expression of CmCdc2 mRNA was also reduced in triploids. Its expression was significantly lower than that in diploid females aged 2 mth (7.66 ± 3.42 fold), 4 mth (59.42 ± 10.50 fold) and 8 mth (42.74 ± 8.36 fold). In males, significantly greater expression of CmCdc2 was observed at age 6 mth (58.61 ± 34.64 fold) and 8 mth (72.70 ± 4.36 fold) diploids compared to triploids. The results illustrated that CmCcnb1 and CmCdc2 are functionally involved in oogenesis and spermatogenesis and reduced expression levels of these transcripts affected the reproductive development of triploid C. macrocephalus.

      PubDate: 2017-05-24T04:22:17Z
  • Effects of alternative oil sources in feed on growth and fatty acid
           composition of juvenile giant river prawn (Macrobrachium rosenbergii)

    • Authors: Chanpim Kangpanich; Jarunan Pratoomyot Wansuk Senanan
      Abstract: Publication date: Available online 24 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Chanpim Kangpanich, Jarunan Pratoomyot, Wansuk Senanan
      To relieve the pressure on the future use of fish oil (FO), alternative oil sources need to be explored. Alternative oil sources were evaluated—Schizochytrium sp. (SZ) and soybean oil (SO)—on the growth performance and flesh quality of juvenile river prawn, Macrobrachium rosenbergii. Five experimental diets differed in the types of oil used (oil comprised 3% of dietary ingredients): 3% FO, 1% SZ + 2% SO, 1.5% SZ + 1.5% SO, 2% SZ +1% SO and 3% SZ. After 60 d of the experiment, the survival rates of prawns fed non-FO diets did not significantly (p > 0.05) differ from those fed the FO diet (77.82 ± 4.45–93.38 ± 0.00%). Moreover, prawns fed diets containing both SZ and SO had significantly (p < 0.05) better growth performance than those fed a single oil source. Prawns fed 2% SZ+1% SO showed the best final weight, percentage weight gain, absolute daily weight gain, specific growth rate and feed conversion ratio (p < 0.05) while those fed 1.5% SZ +1.5% SO or 3% SZ had the highest survival. Tissues of prawns fed the non-FO diets contained higher amounts of n-6 polyunsaturated fatty acid (PUFA) but were lower in n-3 long-chain PUFAs (eicosapentaenoic acid and docosahexaenoic acid) than those fed the FO diet. Among the non-FO groups, prawns fed 3% SZ had the most similar flesh fatty acid profile to those fed 3% FO. Substitution of FO with combinations of SZ and SO significantly improved growth performance and feed utilization. The study recommended diets containing 2% SZ + 1% SO or 1.5% SZ + 1.5% SO for M. rosenbergii juveniles.

      PubDate: 2017-05-24T04:22:17Z
  • Phytotoxic effects of biochar-produced from argan shells-on Salad and
           Barley germination

    • Authors: Laila Bouqbis; Salma Daoud; Hans Werner Koyro; Claudia Irene Kammann; Lalla Fatima Zohra Ainlhout; Moulay Cherif Harrouni
      Abstract: Publication date: Available online 15 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Laila Bouqbis, Salma Daoud, Hans Werner Koyro, Claudia Irene Kammann, Lalla Fatima Zohra Ainlhout, Moulay Cherif Harrouni
      Biochar produced from argan shells can be contaminated by toxic substances accumulated during pyrolysis process. To determine the potential impact of toxic substances and salt stress, this study focused on the effect argan shells biochar has on germination of salad (0%, 0,5%, 1%, 2%, 4% and 8% biochar dry weight in the mixture sand-biochar) and barley seeds (0%, 1%, 2,5%, 5% and 10% biochar dry weight in the mixture peat-biochar). Concerning the salt stress effect of biochar on germination of salad, no negative effect of agran shells biochar was observed neither on germination rate nor on fresh weight of seedlings. Additionally, biochar application increases the germination rate and the fresh weight of biomass in all of the considered treatments. For barley germination test, no significant difference was observed when comparing the germination rate, fresh/dry weight of barley seedlings, water content and water use efficiency of different mixtures (peat-biochar) with those of control. Thus, on both salad and barley germination test, no negative effect of biochar produced from argan shells has been revealed which provide a preliminary indication that it could be safely used for agriculture.

      PubDate: 2017-05-19T03:31:04Z
      DOI: 10.1016/j.anres.2017.04.001
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