Subjects -> AGRICULTURE (Total: 963 journals)
    - AGRICULTURAL ECONOMICS (93 journals)
    - AGRICULTURE (662 journals)
    - CROP PRODUCTION AND SOIL (120 journals)
    - POULTRY AND LIVESTOCK (58 journals)

AGRICULTURE (662 journals)            First | 1 2 3 4     

Showing 201 - 263 of 263 Journals sorted by number of followers
Biodiversity     Hybrid Journal   (Followers: 28)
Agriculture & Food Security     Open Access   (Followers: 22)
Future of Food : Journal on Food, Agriculture and Society     Open Access   (Followers: 21)
African Journal of Food, Agriculture, Nutrition and Development     Open Access   (Followers: 17)
Nature Plants     Full-text available via subscription   (Followers: 17)
Advances in Agriculture     Open Access   (Followers: 16)
Agricultural History Review     Full-text available via subscription   (Followers: 15)
Indian Journal of Agricultural Sciences     Open Access   (Followers: 12)
Biological Agriculture & Horticulture : An International Journal for Sustainable Production Systems     Partially Free   (Followers: 11)
Journal of Land and Rural Studies     Hybrid Journal   (Followers: 11)
Advances in Life Science and Technology     Open Access   (Followers: 11)
Agriculture and Food Sciences Research     Open Access   (Followers: 10)
Agricultural Research     Hybrid Journal   (Followers: 10)
Indian Horticulture     Full-text available via subscription   (Followers: 9)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 8)
Arboricultural Journal : The International Journal of Urban Forestry     Hybrid Journal   (Followers: 7)
Aceh International Journal of Science and Technology     Open Access   (Followers: 7)
International Journal of Agriculture and Forestry     Open Access   (Followers: 7)
Journal of Agriculture and Social Research (JASR)     Open Access   (Followers: 6)
New Journal of Botany     Hybrid Journal   (Followers: 6)
Journal of Agriculture and Sustainability     Open Access   (Followers: 6)
American Journal of Rural Development     Open Access   (Followers: 6)
Journal of Agriculture, Forestry and the Social Sciences     Full-text available via subscription   (Followers: 6)
Invertebrate Reproduction & Development     Hybrid Journal   (Followers: 6)
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 5)
Journal of Advances in Agriculture     Open Access   (Followers: 5)
EvoDevo     Open Access   (Followers: 5)
Journal of Food Security     Open Access   (Followers: 4)
Italian Journal of Agronomy     Open Access   (Followers: 4)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
Tanzania Journal of Agricultural Sciences     Open Access   (Followers: 4)
Journal of Agricultural Science     Open Access   (Followers: 4)
Studies in Australian Garden History     Full-text available via subscription   (Followers: 4)
Journal of Agriculture and Rural Development in the Tropics and Subtropics     Open Access   (Followers: 4)
Journal of Modern Agriculture     Open Access   (Followers: 4)
EU Agrarian Law     Open Access   (Followers: 4)
Acta Agrobotanica     Open Access   (Followers: 4)
Journal of Agricultural Extension and Rural Development     Open Access   (Followers: 4)
Food and Energy Security     Open Access   (Followers: 4)
Journal of Agriculture and Natural Resources Sciences     Open Access   (Followers: 3)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 3)
Revista Verde de Agroecologia e Desenvolvimento Sustentável     Open Access   (Followers: 3)
Sustainable Agriculture Research     Open Access   (Followers: 3)
International Journal of Agricultural Research, Innovation and Technology     Open Access   (Followers: 3)
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
International Journal of Applied Agriculture and Apiculture Research     Open Access   (Followers: 3)
Journal of Essential Oil Research     Hybrid Journal   (Followers: 3)
Diatom Research     Hybrid Journal   (Followers: 3)
Acta Universitatis Sapientiae, Alimentaria     Open Access   (Followers: 3)
Journal of Agricultural Chemistry and Environment     Open Access   (Followers: 3)
Agra Europe     Full-text available via subscription   (Followers: 3)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 3)
Tropical Agricultural Research     Open Access   (Followers: 2)
Journal of Apicultural Science     Open Access   (Followers: 2)
International Journal for Parasitology : Parasites and Wildlife     Open Access   (Followers: 2)
Agrociencia Uruguay     Open Access   (Followers: 2)
New Zealand Journal of Agricultural Research     Hybrid Journal   (Followers: 2)
International Journal of Agricultural Management and Development     Open Access   (Followers: 2)
Rural China     Hybrid Journal   (Followers: 2)
Nigerian Food Journal     Full-text available via subscription   (Followers: 2)
Rivista di Studi sulla Sostenibilità     Full-text available via subscription   (Followers: 2)
Revista Cubana de Ciencia Agrícola     Open Access   (Followers: 2)
Ciencia forestal en México     Open Access   (Followers: 2)
Tropical Agricultural Research and Extension     Open Access   (Followers: 2)
Rural Sustainability Research     Open Access   (Followers: 2)
Journal of Agricultural Extension     Open Access   (Followers: 2)
Journal of Sustainable Society     Open Access   (Followers: 2)
Journal of Agriculture and Food Sciences     Full-text available via subscription   (Followers: 2)
Journal of Agricultural Engineering     Open Access   (Followers: 2)
Huria : Journal of the Open University of Tanzania     Full-text available via subscription   (Followers: 2)
Agro-Science     Full-text available via subscription   (Followers: 2)
Journal of Biology, Agriculture and Healthcare     Open Access   (Followers: 2)
Agricultura Tropica et Subtropica     Open Access   (Followers: 2)
Ghana Journal of Agricultural Science     Full-text available via subscription   (Followers: 2)
Berkala Ilmiah Pertanian     Open Access   (Followers: 1)
Journal of Agricultural Studies     Open Access   (Followers: 1)
Journal of Natural Sciences Research     Open Access   (Followers: 1)
COCOS : The Journal of the Coconut Research Institute of Sri Lanka     Open Access   (Followers: 1)
Progressive Agriculture     Open Access   (Followers: 1)
Agricultural Commodities     Full-text available via subscription   (Followers: 1)
Wartazoa. Indonesian Bulletin of Animal and Veterinary Sciences     Open Access   (Followers: 1)
Nigerian Journal of Technological Research     Full-text available via subscription   (Followers: 1)
Jurnal Veteriner     Open Access   (Followers: 1)
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
Archivos de Zootecnia     Open Access   (Followers: 1)
Folia Horticulturae     Open Access   (Followers: 1)
Revista Brasileira de Higiene e Sanidade Animal     Open Access   (Followers: 1)
International Journal of Agricultural Extension     Open Access   (Followers: 1)
Frontiers in Science     Open Access   (Followers: 1)
Emirates Journal of Food and Agriculture     Open Access   (Followers: 1)
Research in Agriculture, Livestock and Fisheries     Open Access   (Followers: 1)
Journal of Agricultural Engineering     Full-text available via subscription   (Followers: 1)
Buletin Peternakan : Bulletin of Animal Science     Open Access   (Followers: 1)
RIA. Revista de Investigaciones Agropecuarias     Open Access   (Followers: 1)
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca : Food Science and Technology     Open Access   (Followers: 1)
Journal of Degraded and Mining Lands Management     Open Access   (Followers: 1)
Global Approaches to Extension Practice : A Journal of Agricultural Extension     Full-text available via subscription   (Followers: 1)
Plant Knowledge Journal     Open Access   (Followers: 1)
Iranian Journal of Applied Animal Science     Open Access   (Followers: 1)
Acta Technologica Agriculturae     Open Access   (Followers: 1)
Chemical and Biological Technologies for Agriculture     Open Access   (Followers: 1)
International Journal of Recycling of Organic Waste in Agriculture     Open Access   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Annals of Agricultural Sciences     Open Access   (Followers: 1)
Avances en Investigacion Agropecuaria     Open Access   (Followers: 1)
International Journal of Sustainable Agricultural Management and Informatics     Hybrid Journal   (Followers: 1)
Bangladesh Journal of Agricultural Research     Open Access   (Followers: 1)
Journal of Agricultural Sciences     Open Access   (Followers: 1)
Jurnal Ilmu dan Kesehatan Hewan (Veterinary Science and Medicine Journal)     Open Access   (Followers: 1)
Innovare Journal of Agricultural Science     Open Access   (Followers: 1)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Social and Natural Sciences Journal     Open Access  
Jurnal Agroteknologi     Open Access  
Perspectivas Rurales Nueva Época     Open Access  
Organic Farming     Open Access  
Research Ideas and Outcomes     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Landtechnik : Agricultural Engineering     Open Access  
International Letters of Natural Sciences     Open Access  
International Journal of Agriculture System     Open Access  
Heliyon     Open Access  
Ciência e Técnica Vitivinícola     Open Access  
Oilseeds and fats, Crops and Lipids     Open Access  
Annals of Silvicultural Research     Open Access  
Pastura : Journal Of Tropical Forage Science     Open Access  
Journal of Citrus Pathology     Open Access  
Revista Iberoamericana de las Ciencias Biológicas y Agropecuarias     Open Access  
Kansas Agricultural Experiment Station Research Reports     Open Access  
International Journal of Secondary Metabolite     Open Access  
Scientia Agropecuaria     Open Access  
Pelita Perkebunan (Coffee and Cocoa Research Journal)     Open Access  
Revista de Agricultura Neotropical     Open Access  
Cogent Food & Agriculture     Open Access  
Fave : Sección ciencias agrarias     Open Access  
Revista de Ciências Agrárias     Open Access  
Review of Agrarian Studies     Open Access  
Nigerian Journal of Biotechnology     Open Access  
Nigeria Agricultural Journal     Full-text available via subscription  
Annales des Sciences Agronomiques     Full-text available via subscription  
Journal of the Bangladesh Agricultural University     Open Access  
Journal of Buffalo Science     Hybrid Journal  
Revista de Ciências Agroveterinárias     Open Access  
Tropical Grasslands - Forrajes Tropicales     Open Access  
Research in Plant Sciences     Open Access  
World Journal of Agricultural Research     Open Access  
Universal Journal of Agricultural Research     Open Access  
Research & Reviews : Journal of Agriculture Science and Technology     Full-text available via subscription  
Revue Marocaine des Sciences Agronomiques et Vétérinaires     Open Access  
Nativa     Open Access  
SAARC Journal of Agriculture     Open Access  
West African Journal of Applied Ecology     Open Access  
Journal of Agricultural Research and Development     Full-text available via subscription  
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Global Journal of Agricultural Sciences     Full-text available via subscription  
Agrosearch     Open Access  
Agronomie Africaine     Full-text available via subscription  
Professional Agricultural Workers Journal     Open Access  
Interciencia     Open Access  
Nepal Journal of Science and Technology     Open Access  
Journal of the Saudi Society of Agricultural Sciences     Open Access  
Information Processing in Agriculture     Open Access  
Sabaragamuwa University Journal     Open Access  
Ceiba     Open Access  
Research in Sierra Leone Studies : Weave     Open Access  
The Agriculturists     Open Access  
La Calera     Open Access  
Selçuk Tarım ve Gıda Bilimleri Dergisi     Open Access  
Revista de la Universidad del Zulia     Open Access  
Journal of Arid Land     Hybrid Journal  
Rangifer     Open Access  
Encuentro     Open Access  
Journal Of Agrobiotechnology     Open Access  
Coffee Science     Open Access  
Bangladesh Journal of Scientific Research     Open Access  
Landbohistorisk Tidsskrift     Open Access  
Biotecnología en el Sector Agropecuario y Agroindustrial     Open Access  
Walailak Journal of Science and Technology     Open Access  
Universidad y Ciencia     Open Access  
Tropical and Subtropical Agroecosystems     Open Access  
Terra Latinoamericana     Open Access  
Revista Iberoamericana de Tecnologia Postcosecha     Open Access  
Revista Brasileira de Ciências Agrárias     Open Access  
Multiciencias     Open Access  
Ensaios e Ciência : Ciências Biológicas, Agrárias e da Saúde     Open Access  
Bioagro     Open Access  
Agroalimentaria     Open Access  
Revista Mexicana de Ciencias Agrícolas     Open Access  
Revista U.D.C.A Actualidad & Divulgación Científica     Open Access  
Revista Ciencias Técnicas Agropecuarias     Open Access  
Revista Chapingo. Serie horticultura     Open Access  
Pastos y Forrajes     Open Access  
Fitosanidad     Open Access  
Cultivos Tropicales     Open Access  
Cuadernos de Desarrollo Rural     Open Access  
Ciencia e Investigación Agraria     Open Access  
Agronomía Mesoamericana     Open Access  
Agronomía Costarricense     Open Access  
Agrociencia     Open Access  
Agrivita : Journal of Agricultural Science     Open Access  

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Acta Scientiarum. Animal Sciences
Journal Prestige (SJR): 0.25
Number of Followers: 5  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1806-2636 - ISSN (Online) 1807-8672
Published by Universidade Estadual de Maringá Homepage  [9 journals]
  • Physicochemical characteristics of lamb meat fed with cottonseed
           associated with calcium lignosulphonate

    • Authors: Leandro Pereira Lima, Cristiane Leal dos Santos Cruz, Thon Jovita Farias, Marcus Andrade Wanderley Júnior, Rodrigo Soares Junqueira, Ana Rosa Alves de Oliveira, Carla Fabrícia de Araújo Cordeiro, José Dantas Gusmão Filho
      Abstract: The physicochemical characteristics of the meat from lambs fed diets containing whole or disintegrated cottonseed, associated or not with calcium lignosulfonate (LignoCaSO3), were evaluated. Thirty non-castrated Dorper x Santa Inês lambs, with an average of 24.9 ± 3.6 kg and four months of age were confined for 60 days in collective stalls and distributed in a completely randomized design with six replications. After slaughter, by means of contrasts, the averages of the parameters of the semimembranous and semitendinosus muscles were analyzed. The cottonseed increased cooking loss and ash, and reduced muscle weight, water holding capacity and red intensity. The disintegration of the cottonseed reduced the shear force in diets without LignoCaSO3, increased the protein and the loss by cooking and reduced the pH in the diets with the additive. The luminosity values increased with the disintegration of the cottonseed in diets with and without LignoCaSO3. The addition of LignoCaSO3 increased the weight of the muscle, protein, ash, pH, shear strength and the intensity of red. Moisture, lipids and yellow intensity were not influenced by the diets. Even changing the physical-chemical characteristics, the cottonseed with or without LignoCaSO3 does not change the quality of the meat
      PubDate: 2022-05-11
      DOI: 10.4025/actascianimsci.v44i1.54682
      Issue No: Vol. 44 (2022)
  • Induction to tetraploidy in Pacific oysters (Crassostrea gigas)

    • Authors: Emílio Mateus Costa Melo, Simone Sühnel, Francisco Carlos da Silva , Claudio Manoel Rodrigues de Melo
      Abstract: As an alternative to the use of cytochalasin B (CB), 6-dimethylamino-purine (6-DMAP) and thermal shock (heat shock by increasing the temperature from 25 to 36ºC) could be used to induce tetraploidy in Pacific oyster (Crassostrea gigas) diploids. Induction was performed by applying shocks after elimination of the first polar corpuscle at the end of meiosis I. Ploidy rates were verified using flow cytometry. Tetraploid larvae were obtained using all inductor (6-DMAP, thermal shock and CB) treatments. No difference in the efficiency of tetraploidy induction was noted among 6-DMAP, thermal shock and CB. The number of D-larvae and their yield, determined by calculating the percentage of well-formed D-larvae in relation to the total number of larvae, was similar (p > 0.05) among the evaluated induction methods. We suggest that 6-DMAP and thermal shock should be used in tetraploidy induction protocols, thereby avoiding the use of CB, which is a harmful agent for both humans and the environment.
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.55337
      Issue No: Vol. 44 (2022)
  • Evaluation of Megathyrsus maximus genotypes under water stress conditions

    • Authors: Elson Marcos de Oliveira, Janaina Azevedo Martuscello, Liana Jank, Daniel de Noronha Figueiredo Vieira da Cunha, Mateus Figueiredo Santos
      Abstract: The objective was to evaluate the production of Megathyrsus maximus genotypes (Syn. Panicum maximum), under different levels of water in the soil. This was a 5x5 factorial completely randomized design conducted in a greenhouse, combining five genotypes of M. maximus (B55, C10 and PM30, cv. Massai and cv. BRS Tamani) and five levels of soil field capacities (20%, 40%, 60%, 100% and 140%), with three replications. Dry matter production was evaluated: leaf, stem, dead material, root, shoot and total dry matters, as well as the number of tillers and leaf:stem and aboveground:root ratios. The qualitative factor (genotypes) was subjected to Duncan test at 5% probability. The quantitative factor (% field capacity) was subjected to regression, adopting 5% as a critical level of probability. There was no interaction between the factors for any of the evaluated characteristics. Significant differences among the genotypes were detected for tiller number, dead material dry mass, root and total dry mass and leaf:stem ratio. There was no significant effect of the percentage of field capacity on most of the characteristics, except for leaf:stem and aboveground:root ratios. Cultivar Massai showed the best forage production compared to the other genotypes, regardless of the percentage of field capacity evaluated. In general, the evaluated genotypes were more tolerant to excess water stress than to water deficit
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.54975
      Issue No: Vol. 44 (2022)
  • The genotype does not influence the establishment of elephantgrass
           (Pennisetum purpureum Schum.)

    • Authors: Robson Elpídio Pereira Ribeiro, Alexandre Carneiro Leão de Mello, Márcio Vieira da Cunha, Suellen Brandão de Miranda Costa, Janerson José Coelho, Rayanne Thalita de Almeida Souza, Mércia Virginia Ferreira dos Santos
      Abstract: This study investigated whether genotype influences the establishment of Pennisetum purpureum Schumach. The experimental design was a randomized complete blocks with four treatments and eight replications (n=8). The treatments were four genotypes of P. purpureum, two classified as tall sizes: P. purpureum cv. Elephant B and cv. IRI 381; and two as dwarf types: P. purpureum cv. Mott and Taiwan A-146 2.37. They were planted in a tropical wet and dry region of Brazil. Tall genotypes showed superior field sprouting rates (p < 0.05), ranging between 95-99%, while dwarfs varied between 88-90%, however, Elephant B and IRI 381 produced a much lower average number of tillers (31 and 32 linear m-1, respectively), than Taiwan A-146 2.37 and Mott (56 and 41 linear m-1, respectively) (p < 0.05). Dwarf genotypes produced lower biomass yields (p < 0.05), but this was genotype-dependent and did not impact on their establishment. The levels of non-structural carbohydrates (NSC) (>10%) in the planted stems were associated with satisfactory field sprouting of the elephantgrass genotypes. Despite some variations between the genotypes in terms of sprouting, tillering, and growth rates, the kind of genotype had no major significance on the establishment of the elephantgrass.
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.54986
      Issue No: Vol. 44 (2022)
  • The effect of dietary supplementation of mucuna leaf meal on the growth
           performance, blood parameters, and carcass quality of broiler

    • Authors: Olugbenga David Oloruntola, Simeon Olugbenga Ayodele, Idowu Samuel Omoniyi, Samuel Adebowale Adeyeye, Moyosore Joseph Adegbeye
      Abstract: Three hundred 1-day old broiler chickens were used to assess the effects of Mucuna leaf meal (MLM) dietary supplementation on the performance, haemato-biochemical indices, oxidative status and meat of broiler chickens. Five experimental supplemented diets were formulated: diets: 1 (0% supplement), 2 (1.1 % OXYT), 3 (0.5% MLM), 4 (1.0 % MLM) and 5 (1.5% MLM). The final weight gain of the birds fed diets 2 and 5 was higher (p < 0.05) than those birds fed the control and other diets. The relative weights of the lung were affected (p < 0.05) by dietary supplementation. Serum cholesterol concentration reduces (p < 0.05) with increased dietary MLM supplementation levels from 1.0% to 1.5%. Superoxide dismutase and glutathione peroxidase levels increased (p < 0.05) in the broiler chickens fed a 1.5% MLM supplemented diet, compared to those fed the control and other diets. Meat cholesterol of the chickens fed 1.0%, and 1.5% MLM supplemented diets were lower (p < 0.05) than the experimental birds fed the rest diets. In conclusion, the 1.5 % MLM dietary supplementation improves body weight gain, reduces the serum cholesterol concentration, increases the serum superoxide dismutase and glutathione peroxidase activities of the chickens and reduced the meat cholesterol.
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.55362
      Issue No: Vol. 44 (2022)
  • Correlation and path analysis of assessment methodologies of bone quality
           from brown egg layers at final of the production cycle

    • Authors: Túlio Leite Reis, Felipe Dilelis, Letícia dos Santos Lima, Pedro Henrique Ferreira da Silva, Pollianna Luciene da Silva Soares, Ligia Fatima Lima Calixto
      Abstract: This study aimed to investigate direct and indirect correlations of methodologies of bone quality analysis from brown egg layers, at final of the production cycle. Twelve femurs of Dekalb Brown laying hens, euthanized at 85-week-old, were assessed to evaluate breaking strength (BS), Seedor index (SI), mineral matter (MM), calcium (Ca) and phosphorus (P) contents, besides cortical (CorD), medullar (MedD) and epiphysis (EpiD) diameters. Correlations and path analysis were obtained with the aid of SAS® University (p ≤ 0.05). The BS directly represented the bone quality and was compared to other methodologies. Greater linear correlations occurred between BS and MM (r = 0.82), MM and Ca (r = 0.72), and BS and Ca (r = 0.70). The MM content displayed the greatest direct effect on the BS (r = 0.53). The Ca content showed a reduced direct effect on the BS (r = 0.18), with indirect effects through MM content (r = 0.44) and EpiD (r = 0.15), however, presented a great total correlation (r = 0.78). Determination of mineral matter content is the main methodology associated with femur breaking strength from brown egg layers at final of the productive cycle. Because of that, this methodology is more reliable to determine bone quality.
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.54800
      Issue No: Vol. 44 (2022)
  • The sequence analysis of M2 gene for identification of amantadine
           resistance in avian influenza virus (H9N2 subtype), detected from broiler
           chickens with respiratory syndrome during 2016-2018, in Isfahan-Iran

    • Authors: Majid Gholami-Ahangaran, Asal Basiratpour, Oveys Pourmahdi, Pedram Khorrami, Mehrdad Ostadpoor, Mohammad Javad Mirbagheri, Asiye Ahmadi-Dastgerdi
      Abstract: Amantadine and rimantadine are used for prevention and treatment of influenza A virus (IAV) infection. The rates of resistant IAVs have been increasing globally. However, amino acid substitutions in the M2 transmembrane channel lead to amantadine resistance. The residues of 26, 27, 30, 31 or 34 are marker of amantadine resistance in IAVs. In this study, 15 pooled tracheal samples collected from 15 chicken farms with severe respiratory sign and mortality in 2016-2018. After identification of influenza A and H9 subtype, the 1027 bp fragment of M gene was sequenced for molecular evaluation of amantadine resistance in AIV strains. Results showed 12 out of 15 pooled samples were positive for IAV and H9 subtype. Based on M2 gene analysis, 8 out of 12 (66.66%) were resistance to amantadine. Four out of 8 (50%) showed S31N substitution (serine to asparagine) and four out of 8 (50%) have V27A substitution (valine to alanine). There was no dual amantadine resistance mutation in any specimens. In conclusion, the emergence of amantadine resistance variants of AIV in Iran, can raise concerns about controlling of the seasonal and the future pandemic influenza. Therefore, greater caution is needed in the use of adamantanes
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.54894
      Issue No: Vol. 44 (2022)
  • Leptospirosis, bovine viral diarrhea and infectious bovine
           rhinotracheitis: prevalence in Colombian cattle and buffaloes

    • Authors: Alejandra Arias García, Julio Tobón Torreglosa, Diego Dubeibe Marín, Marcella Katheryne Marques Bernal, Sebastião Tavares Rolim Filho, Washington Luiz Assunção Pereira
      Abstract: One of the limiting factors of productive efficiency in cattle and buffalo herds is related to the high prevalence of infectious diseases which affect reproduction. The aim of this study was to determine the prevalence of anti-Leptospira antibodies for bovine viral diarrhea virus (BVDV) and bovine herpesvirus type 1 (BoHV-1) in bovine and buffalo herds in Colombia. Blood serum samples were collected from 1100 buffaloes and 1000 cattle. The ELISA technique was used to detect antibodies against BVDV and BoHV-1, and the microscopic agglutination technique to detect anti-Leptospira antibodies. The prevalence of anti-Leptospira antibodies and of BVDV and BoHV-1 in bovine samples was observed in 16, 39.7, and 65% of animals, respectively, while the positivity in samples for the same antibodies in buffalos was detected in 18.7, 27.5 and 51.5%, respectively. Exposure of cattle and buffaloes to BoHV-1 was positively associated with age, higher prevalence rates were observed in older ages. Seropositivity of cattle for BVDV and BoHV-1 was higher in male animals. Activities such as embryo transfer, milking, and needle reuses, as well as the presence of cats and rodents are factors which favor positivity of the herd for BVDV and BoHV-1.
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.54875
      Issue No: Vol. 44 (2022)
  • Economic loss from the main causes of whole bovine carcass condemnation in
           slaughterhouses supervised by the Federal Inspection Service in São Paulo
           state from 2010 to 2019

    • Authors: Rayane Marques Rodrigues, Thaiany Oliveira Martins , Diego Pierotti Procópio
      Abstract: The objective of this study was to analyze and determine the economic loss from the main causes of whole bovine carcass condemnation in slaughterhouses that are inspected by the Federal Inspection Service in the state of São Paulo for the period from 2010 to 2019. Economic loss was calculated from multiplication of the number of whole carcasses condemned by the mean yield of meat per carcass and the mean annual price of beef. The monetary values were updated to the year 2019, using the IGP-DI [General Price Index]. The results indicated an economic loss of R$ 4.06 billion from the whole condemnation of bovine carcasses and the main causes were contamination (R$ 1.73 billion), abscess (R$ 283.20 million), urinary cyst (R$ 194.14 million), emphysema (R$ 107.00 million) and nephritis (R$ 107.52 million). The main factors associated with the whole condemnation of bovine carcasses are failures in the pre-slaughter management and in the slaughter stages, as well as nutritional disorders. Consequently, to minimize such losses in beef production in São Paulo state it is recommended to adopt good production practices and train slaughterhouse employees.
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.55220
      Issue No: Vol. 44 (2022)
  • english Antimicrobial properties of lysozyme in meat and meat products:
           possibilities and challenges

    • Authors: Zahra Pilevar, Khadijeh Abhari, Hasan Tahmasebi, Samira Beikzadeh, Roya Afshari, Soheil Eskandari, Mohammad Jafar Ahmadi Bozorg, Hedayat Hosseini
      Abstract: Meat and meat products are highly perishable as they can provide an appropriate environment for microbial growth due to their high water activity and proper pH level. Quality, safety, sensory and nutritional properties of meat products are highly influenced by pathogenic and spoilage microorganisms. To prevent microbial growth, artificial antimicrobials have been used in food matrices, however safety concerns regarding the use of synthetic preservatives is a challenging issue. Additionally, consumer’s trend towards natural mildly processed products with extended shelf life necessitates the identification of alternative additives originating from natural sources of new acceptable and effective antimicrobials. Although the effectiveness of some natural antimicrobial agents has already been reported, still, there is lack of information regarding the possibility of using lysozyme as a preservative in meat and meat products either alone or in combination with other hurdles. In the present review the applications and beneficial effects of applying lysozyme in meat products, considering its limitations such as allergic problems, interactions with food constituents, reducing sensory changes and toxicity due to high required concentrations to prevent spoilage and oxidation in foods will be discussed
      PubDate: 2022-05-10
      DOI: 10.4025/actascianimsci.v44i1.55262
      Issue No: Vol. 44 (2022)
  • Interference of weeds in ruziziensis grass pastures

    • Authors: Guilherme Henrique Rodrigues Pinheiro, Prissila Pereira dos Santos e Araújo, Ricardo Fagundes Marques, Rodrigo Marques de Souza, Ilgner Thiago Duarte Silva, Sidnei Roberto de Marchi
      Abstract: The aim of this study was to assess the effect of increasing periods of coexistence of weed plants with Urochloa ruziziensis on the canopy structure and productivity of a pasture already established with this forage species. The experiment was a randomized blocks design with four replications, and treatments consisted of seven increasing periods of coexistence of forage grass with weed plants: 0 (control), 15, 30, 45, 60, 75 and 90 days after regrowth (DAR). The main morpho-structural and productive characteristics of the forage plants were determined at the end of the experimental period (90 DAR). The ratio of the first green leaf height to the tiller height increases, while the leaf to stem ratio diminishes as the period of interaction with the infesting community increases. The number of green leaves per tiller and the tiller height diminishes as the period of coexistence with weed plants increases. The presence of weed plants interferes negatively with all parameters of the grass canopy structure and productivity of a grazing land already established with Urochloa ruziziensis, suggesting that measures of control of the infesting community should be adopted up to 17 days of regrowth of the forage plant.
      PubDate: 2022-04-29
      DOI: 10.4025/actascianimsci.v44i1.54135
      Issue No: Vol. 44 (2022)
  • Natural and synthetic pigments in sorghum-based diets for laying hens

    • Authors: Claudiane Aparecida Rocha Chaves, Diogo Alvarenga Miranda, Adriano Geraldo, Luiz Carlos Machado, Jean Kaique Valentim, Rodrigo Garófallo Garcia
      Abstract: The objective of this work was to evaluate the supplementation of yellow natural pigment levels based on Marigold Flower extract (2%) and yellow synthetic pigment (Carophyll Yellow 10%) in sorghum-based rations for commercial laying hens and their influence on bird performance and egg quality. A completely randomized design was adopted with 5 treatments, 6 replicates, and 5 laying hens in each repetition. The treatments evaluated were: Sorghum based diet without supplementation with pigmentant - Negative Control; 150 g t-1 of Yellow Natural Pigment feed; 300 g t-1 of yellow natural pigment feed; 450 g t-1 of yellow natural pigment feed; 25 g t-1 of yellow industrial pigment feed. The Tukey test was applied at 5% for the analysis of the variables of performance and quality of the eggs. The variables related to external and internal egg quality and poultry yield performance did not present significant results (p > 0.05). Only the variable color of the yolk obtained significance (p < 0.01), with an increase according to the number of pigments included in the diet. Sorghum can be used together supplementation of natural and synthetic pigments in the diet to improve yolk pigmentation. It is recommended to include 450g t-1 of natural marigold flower pigment feed (2%) in sorghum-based diets for better pigmentation of the yolk in place of 25 g t-1 of yellow synthetic pigmented, by improving the color of the yolk and not interfering in the productive performance of the laying hens and the quality of the eggs.
      PubDate: 2022-04-29
      DOI: 10.4025/actascianimsci.v44i1.53060
      Issue No: Vol. 44 (2022)
  • Feeding behavior of sheep in feedlot and fed with diets containing
           detoxified castor cake in substitution to the soybean meal

    • Authors: Roberto Cláudio Fernandes Franco Pompeu, Marcos Cláudio Pinheiro Rogério, Magno José Duarte Cândido, Marco Aurelio Delmondes Bomfim, Elzânia Sales Pereira, Marcos Neves Lopes, Ricardo Alves de Araújo
      Abstract: To evaluate the ingestive behavior of sheep confined and fed with substitution levels of soybean meal (SM) by detoxified castor cake (DCC). We adopted a completely randomized design, with four levels of substitution (0; 33; 67 and 100%) with five replicates (sheep). We estimated the percentages of total times of intake of feed, time of rumination, in ‘other activities’, in idle agreed and in idle sleeping, dividing the day into eight periods (5h00 to 8h00; 8h01 to 11h00; 11h01 to 14h00; 14h01 to 17h00; 17h01 to 20h00; 20h01 to 23h00; 23h01 to 2h00 and 2h01 to 5h00). No interaction was observed between levels of substitution of the SM by DCC and period of the day to go. However, the isolated effect period of the day, there is more time to go from 8h00 to 11h00. The time rumination was not influenced by the levels of substitution of the SM by DCC. As for the variable other activities, the level of 67% DCC was superior to that of 100%. Regarding the variables idle agreed and idle sleeping, were not observed effects of substitution levels of SM by DCC. The DCC provides no changes in the behavior of the sheep, but the period of the day exerts influence on the behavioral pattern of such animals.
      PubDate: 2022-04-29
      DOI: 10.4025/actascianimsci.v44i1.54512
      Issue No: Vol. 44 (2022)
  • Effect of dietary protein level and corn processing on behavior activity
           of high producing dairy cows

    • Authors: Hassan Rafiee, Msaoud Alikhani, Gholam Reza Ghorbani
      Abstract: The objective of this experiment was to evaluate the effects of corn processing and protein level on the feeding, lying, and post milking standing (PMS) behavior in high producing cows. Eight Holstein cows were randomly assigned to diets containing either finely ground (FGC) or steam flaked (SFC) corn based on either low (LP) or high (HP) protein content. Cows receiving LP had lower milk yield than cows receiving HP with similar DMI. Moreover, FGC-fed cows had higher DMI than SFC-fed cows with similar milk yields. Eating and rumination time tended to be lower and chewing time was lower in HP-fed cows than LP-fed cows. Cows fed SFC tended to have higher laying rumination interval and lower lying rumination bouts than cows fed FGC. Total and average PMS were lower in cows fed HP than LP. Cows fed LP had higher chewing activity in the daytime than cows fed HP. Our results suggested that the protein level and corn processing affect the standing and lying behavior of high producing dairy cows, although, this effect is marginal. Results also indicated that probably any change in the diet that increases the rumination and eating times could also improve the PMS
      PubDate: 2022-04-29
      DOI: 10.4025/actascianimsci.v44i1.54603
      Issue No: Vol. 44 (2022)
  • In natura residues from peach palm heart industry for ruminant feed

    • Authors: José Evandro de Moraes, Túlio Leite Reis, Eduardo Jun Fuzitani, Erval Rafael Damatto Júnior, Camila Memari Trava Maioli, Weber Vilas Bôas Soares, Mauro Sartori Bueno, Valdinei Tadeu Paulino
      Abstract: Palm heart processing generates a large amount of residues like leaves, sheath and stems that have potential for ruminant feeding. This study aimed to evaluate the effect of in natura peach palm heart (Bactris gasipaes Khunt.) residues on performance, dry matter (DM) digestibility and intake of ruminants. External sheath was the most suitable residue for sheep, cattle and buffaloes feeding, although sheep presented rejection of 43.5 g kg-1. Thereby, assays of apparent and in vitro dry matter digestibility were done under four feeding treatments, which were the exclusive peach palm sheath, and that one mixed with residues of banana and rice, besides citrus pulp. The experiment was carried out under randomized complete design, with five replications. Greater DM intake (p < 0.05) were observed in animals fed with peach palm sheath mixed with rice (1.12 kg day-1) and mixed with citrus pulp (0.91 kg day-1), however there were no difference among treatments regarding the sheep final weight (p > 0.05). Cattle and buffaloes accept different types of peach palm residues, unlike sheep that present a low rejecting for them. Citrus pulp and rice residue raise the roughage quality. Peach palm residues can be an alternative roughage source to feed ruminants.
      PubDate: 2022-04-29
      DOI: 10.4025/actascianimsci.v44i1.54712
      Issue No: Vol. 44 (2022)
  • Energy and nutrient digestibility from mulberry (Morus alba) leaf meal for
           Nile tilapia

    • Authors: Patrícia da Silva Dias, Hanna Karolyna dos Santos, Rafael Ernesto Balen, Izabel Volkweis Zadinelo, Fábio Meurer
      Abstract: The aim of this study was to determine the apparent digestibility coefficients and digestible values of crude protein, ethereal extract, gross energy and dry matter of mulberry leaf meal (MLM) (Morus alba L.) as Nile tilapia (Oreochromis niloticus) feed. A total of 135 Nile tilapia juveniles were used, and the indirect methodology (Cr2O3) was applied for digestibility determinations. Mulberry leave meal presented good apparent digestible coefficients of protein, ethereal extract and energy with respective values of 0.94, 0.58 and 0.39. The mulberry leave meal thus comprises adequate digestible protein and digestible energy values, similar or better than other leafy foods, presenting potential for inclusion in Nile tilapia diets.
      PubDate: 2022-03-08
      DOI: 10.4025/actascianimsci.v44i1.54443
      Issue No: Vol. 44 (2022)
  • Influence of guava residue on tambaqui growth performance

    • Authors: Ubatã Corrêa Pereira, Nataly Meira Matos, Romy Gleyse Chagas Barros, Priscila Monise Dos Santos Santana, Anailton Carlos Alves de Almeida, Jodnes Sobreira Vieira, Carolina Nunes Costa Bomfim
      Abstract: Fruit residues represent alternative ingredients that can be included in diets of tambaqui, Colossoma macropomum. This study evaluated the growth performance of tambaqui fed diets containing different levels of guava agroindustrial residue. The experiment was based on a completely randomised design, with 105 fish randomly distributed in 15 plastic 60 L-1 boxes with a water recirculation system. Feeding was carried out to apparent satiety for 45 days, using diets with 0, 50, 100, 150 and 200 g kg-1 inclusion of guava residue. Biometrics were performed every 15 days. Quadratic effect (p < 0.05) was observed for daily feed intake and apparent feed conversion, with optimum levels of 4.86 and 6.05% inclusion of guava residue, respectively. There was no significant difference (p > 0.05) in relation to final weight, weight gain, specific growth rate, hepato-somatic index, survival rate and protein efficiency rate by the dietary treatments. The inclusion of up to 150 g kg-1 of the guava agroindustrial residue in the feed did not compromise the performance of tambaqui juveniles.
      PubDate: 2022-03-08
      DOI: 10.4025/actascianimsci.v44i1.54361
      Issue No: Vol. 44 (2022)
  • Prospection of putative genes for digestive enzymes based on functional
           genome of the hepatopancreas of Amazon river prawn

    • Authors: Cássia Pantoja Rocha, Carlos Murilo Tenório Maciel, Wagner C. Valenti, Patricia Moraes-Valenti, Iracilda Sampaio, Cristiana Ramalho Maciel
      Abstract: Over recent years, Macrobrachium amazonicum has become a popular species for shrimp farming due to their fast growth, high survival rates, and marketability. Several studies have focused on the development of new technology for the culture of this species, but many aspects of their nutrition and physiology remain unknown. Thus, the goal of the present study was to obtain transcripts of putative genes encoding digestive enzymes, based on a library of the cDNA from the hepatopancreas of M. amazonicum, sequenced in the Ion TorrentTM platform. We identified fragments of nine genes related to digestive enzymes, acting over proteins, carbohydrates and lipids. Endo and exoproteases were also recorded in the hepatopancreas, indicating adaptation to the digestion of protein-rich foods. Nonetheless, the enzymes involved in the carbohydrate metabolism formed the largest functional group in M. amazonicum, including enzymes related to the digestion of starch, chitin, and cellulose. These findings indicate that the species has a genetic apparatus of a well-adapted omnivorous animal. This information may provide important insights for the selection of ingredients for the formulation of a more appropriate diet to the enzymatic repertoire of M. amazonicum.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.53894
      Issue No: Vol. 44 (2022)
  • Sward structure, morphological components and forage yield of massai grass
           in response to residual effect of swine biofertilizer

    • Authors: José Eldo Costa, Leonardo Eufrázio Soares, Valéria Fernandes de Oliveira Sousa, Ana Beatriz Graciano da Costa, João Virgínio Emerenciano Neto, Ermelinda Maria Mota Oliveira, Gelson dos Santos Difante, Gualter Guenther Costa da Silva
      Abstract: The present study aimed to evaluate the residual effects of the application of biofertilizer and mineral fertilizer on sward structure and morphological components of Panicum maximum cv. Massai. The experimental design comprised randomized blocks with six treatments consisting of increasing doses of swine biofertilizer (0, 10, 20, 30 and 40 Mg ha-1) and mineral fertilization (150 kg N ha-1, 33 kg P ha-1), with four replicates. The variables analyzed were pasture height, light interception, leaf area index, forage mass and morphological components. Plant height responded linearly and positively to biofertilizer levels in the three evaluations. The highest averages for light interception (51.63%) and leaf area index (1.64) were observed for the 240 days (40 Mg ha-1). Dry leaf mass was influenced by the increase in biofertilizer dose, with increments of 39.68%, 25.07% and 44.66% for the 240, 300 and 360 days, respectively, when compared to the control treatment. Mineral fertilization promoted lower mass of dead material and lower leaf area index but did not differ from biofertilizer for the other variables. The residual effect of swine biofertilizer was greater than that of mineral fertilization, with a minimum use of 20 Mg ha-1 a practical agronomic recommendation. 
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.53792
      Issue No: Vol. 44 (2022)
  • Morphogenesis of age groups of marandu palisadegrass tillers during the
           stockpiling period

    • Authors: Amanda Aparecida Brito, Lorena Carla Adorno , Victor Santana Novais , Gustavo Segatto Borges, Bruno Gomes Borges , Kimberly Barcelos Gois, Manoel Eduardo Rozalino Santos
      Abstract: The stockpiled forage canopy consists of tillers at different ages, which have specific development patterns. The objective was to understand the development of Urochloa brizantha cv. Marandu during the stockpiling period, by the morphogenic evaluation of tillers at different ages. The experiment was conducted in a completely randomized design, in a split plot scheme, with four replications. Three tillers ages (young, mature and old) and two periods of stockpiling (initial and final) were evaluated. The leaf appearance and elongation rates were higher in young tillers (0.05 tiller-1 day-1 and 0.62 cm tiller-1 day-1, respectively), compared to old tillers (0.02 tiller leaf-1 day-1 and 0.20 cm tiller-1 day-1, respectively). The final leaf length of the tillers' age groups was the same in the beginning of stockpiling. The number of live leaves was lower in the old tillers (2.4), compared to the young (3.6) and mature (4.1) ones, contrary to the stem length. The number of old tillers (800 tillers m-2) was higher than the young (299 tillers m-2) and mature ones (358 tillers m-²). The participation of different age groups of tillers in the canopy influences the development and structure of marandu palisadegrass.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.53901
      Issue No: Vol. 44 (2022)
  • Use of different adsorbents in broiler diets naturally contaminated by

    • Authors: Priscila Michelin Groff-Urayama, Joselaine Bortolanza Padilha-Boaretto, Mateus Henrique Gorges, Isabela Lopes dos Santos, Jéssica Moraes Cruvinel, Adriana Sbardelotto Di Domenico, Sabrina Endo Takahashi
      Abstract: This study investigated the effects of adding different adsorbent substances to broilers feed naturally contaminated by mycotoxins. Two hundred and eighty male 1-day-old chicks, Cobb Slow® lineage, were distributed in a randomized block design with 4 treatments, 5 repetitions with 14 birds each. The treatments consisted of: T1- basal feed naturally contaminated with mycotoxins. T2- basal feed + Bentonite, Thistle Extract, Yeast Extract, Vitamin E and Choline. T3- basal feed + Bentonite, Thistle Extract, yeast cell wall and Silymarin. T4- basal feed + Bentonite and Algae extract. Performance (weight gain, feed intake, feed conversion) at 7, 14, 21, 28 days were evaluated. At 28 days, a portion of the jejunum was collected in two birds by replicate to study the intestinal morphology. The relative weight of the gizzard, proventricle and total intestine was evaluated. The data obtained were analyzed using the statistical program SAS (9.3). With the use of any adsorbents studied, the performance and liver weight were improved in all evaluated periods. Thus, the inclusion of adsorbents improves the performance of the broiler chickens when the feed is contaminated by mycotoxins.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.54090
      Issue No: Vol. 44 (2022)
  • The effects of 1a(OH)D3 individually or in combination with phytase, and
           different levels of cholecalciferol on performance, tibia criteria, and
           plasma minerals of Japanese quails

    • Authors: Shahab Shams, Farshid Kheiri, Nasir Landy
      Abstract: The aim of studywas to compare efficacy of 1-α(OH)D3 alone or in combination with phytase and 1-α(OH)D3 in combination of phytase and different concentration of cholecalciferol on performance, tibia parameters, andplasma minerals of quails fed Ca-P deficient diet. A total of 280 mixed sex 5-d-old quails were allocated to 7 treatments with 5 replicates. The vitamin supplement which incorporated to basal diet did not contain cholecalciferol. The dietary treatments were as follows: Ca-P deficient diet (basal diet); basal diet + 500 FTU phytase/kg of diet; basal diet + phytase + 5 μg of 1-α(OH)D3 kg-1 of diet;basal diet + phytase + 5 μg of 1-α(OH)D3 and 250, 500, 750 and 1,000 IU of cholecalciferol kg-1of diet. The highest final body weight and the best feed conversion ratioobtained in the group supplemented with 1,000 IU cholecalciferol kg-1 of diet (p < 0.05). Supplementation of 1-α(OH)D3 alone or in combination with phytase and phytase and different concentration of cholecalciferol could improve tibia parameters (p < 0.05). In conclusion, supplementation of 1-α(OH)D3 alone to Ca-P deficient diet could maximize tibia mineralization, whereas it couldn't maximize performance, performance criteria were maximized by supplementation of 1,000 IU cholecalciferol kg-1 of diet.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.54218
      Issue No: Vol. 44 (2022)
  • Performance supplementation and ingestive behavior of sheep finished in
           continuous pasture in the period of water restriction

    • Authors: Rebeca Rocha Cardoso, Luciano Fernandes Sousa, Ana Cristina Ferreira Holanda , Glenda Neves Bentes
      Abstract: The objective was to evaluate the performance and ingestive behavior of grazing sheep in the finishing stage, with supplementation in the period of water restriction. Fifteen male crossbred sheep were used in continuous pasture in Massai grass and supplied supplement formulated with 18% of crude protein in three levels (0.0; 0.3 and 0.6% of body weight), individually. Bromatological and fodder production analyses were performed, as well as foliar mass production, stem mass and senescent material mass. The performance and ingestive behavior of the animals were evaluated. The design was in four randomized blocks for the variables measured in the fodder. For the biometry, weight gain and behavior variables measured in the animals, the design was entirely randomized with five repetitions. The total forage mass production was 5512.41 kg ha-1, with 6.58% of crude protein, 79 38% of neutral detergent fiber and with 65% of foliar mass. The total weight gain and daily weight gain were higher in animals that received a supplement of 0.6% of body weight. In general, the animals grazed more in the morning period and the supplemented ones destined more time for rumination and leisure than the ones not supplemented.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.53855
      Issue No: Vol. 44 (2022)
  • Meat quality of (Bos indicus) cattle finished on different concentrate

    • Authors: Tsegay Teklebrhan Gebremariam
      Abstract: The study investigated meat quality of bulls fed concentrate feeds and hay. The treatments were hay ad libitum + dried cafeteria leftover 4 kg DM d-1 (D1); hay ad libitum + wheat bran 4 kg DM d-1 (D2); hay ad libitum + 4 maize grain 4 kg DM d-1 (D3); hay ad libitum + mix 4 kg DM d-1 (1:1, wheat bran to maize grain, respectively (D4)); hay ad libitum + scrambled whole groundnut 4 kg DM d-1 (D5); and hay ad libitum + mix of each ingredient 4 kg DM d-1(D6)). Samples from longissimus lumborum muscle were taken in triplicate. Beef from bulls fed D5 had highest (p < 0.05) protein and fat than those fed other treatments. However, bulls finished in D3 had similar fat to those fed with whole ground nut. Highest meat tenderness (p < 0.05) recorded at 24th followed by 16th d than those aged on other periods. Beef from D6 produced lean meat, which is acceptable to consumer and market demand than D3, produced carcass with highest fat coverage This study confirmed that meat from D6 had an acceptable quality attribute suggesting the breed could serve as a potential source in red meat industry.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.54237
      Issue No: Vol. 44 (2022)
  • Goat kids fed diets containing castor cake detoxified: II. Nitrogen
           balance, hepatic and renal function

    • Authors: Ricardo Alves de Araújo, Roberto Cláudio Fernandes Franco Pompeu, Marcos Cláudio Pinheiro Rogério, Magno José Duarte Cândido, José Neuman Miranda Neiva
      Abstract: The aim of this study was to evaluate the influence of completely replacing soybean meal (SM) with castor cake detoxified (DCC) with two alkaline products on the nitrogen balance and hepatic and renal function in goat kids. Goat kids of two breeds, Saanen and Anglo Nubian, with an initial body weight of 16.2 ± 0.67 kg, and confined during the growth phase, were used. The treatments consisted of three diets: one based on SM and the other two based on castor cake detoxified with Ca(OH)2 or NaOH. Twenty-four goats kids were distributed in a completely randomized design using a 3 x 2 factorial scheme (diet x breed) with four replicates per combination. The experimental period lasted for 270 days. Consumed nitrogen, fecal nitrogen, urinary nitrogen, retained nitrogen, and nitrogen balance were influenced (p < 0.05) by diets. There was significant effect of diets (p < 0.05) on creatinine, direct bilirubin, urea, alanine aminotransferase, aspartate aminotransferase and gamma-glutamyltransferase blood levels, however without any negative changes involving renal or hepatic dysfunction. Inclusion of castor cake in the diet of goats kids in confinement is an attractive option, considering that goats kids use does not cause hepatic and renal alterations, suggesting that SM can be completely replaced. NaOH DCC stands in the substitution of soybean meal, because in spite of decreasing the consumption of nitrogen provides the same retention of soybean meal.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.54370
      Issue No: Vol. 44 (2022)
  • Dehydrated cashew apple in different grinding sizes to sheep

    • Authors: Alexandre Ribeiro Araújo, Joaquim Bezerra Costa, Marcos Cláudio Pinheiro Rogério, Maria do Socorro de Souza Carneiro, Luciano Cavalcante Muniz, Rildson Melo Fontenele, Vandenberg Lira Silva
      Abstract: The cashew pseudo fruit can be used to animal feeding in tropical and subtropical countries as Brazil, Ivory Coast and Vietnam. Thus, our objective was to evaluate the intake, digestibility of nutrients and nitrogen balance of dehydrated cashew apple by-product to sheep. The experiment was carried out with 24 sheep in a completely randomized design with the treatments distributed in a 4 x 2 factorial scheme to test the inclusion (11, 21, 28 and 33% dry matter basis) and the grinding sizes (3 and 19 mm diameter) of dehydrated cashew apple by-product. To grinding sizes there was no effect to intake and digestibility, suggesting the use of dehydrated cashew apple by-product either finely or coarsely milled. The inclusion up to 33% of dehydrated cashew apple by-product inclusion did not affect voluntary intake and nitrogen balance. However, when including above 21%, there was a reduction of ether extract digestibility and more than 28% reduced dry matter and organic matter digestibility.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.54398
      Issue No: Vol. 44 (2022)
  • Evaluation of in vitro energy distribution and methanogenic potential of
           two forages with the addition of condensed tannins

    • Authors: Juan Manuel Cantet, Darío Colombatto, Rocío Soledad Martinez, Rolando Barahona Rosales , Isabel Cristina Molina Botero, Gustavo Jaurena
      Abstract: The objective of this work was to analyze the effect of the addition of condensed tannins (CT) in the efficiency of digestion, methanogenic potential and energy distribution between the fermentation products of two forages. An assay was carried out using the in vitro gas production technique in which extracts of Quebracho (Schinopsis balansae) and Lotus corniculatus were evaluated with fermentation patterns of derived products from Ryegrass (RG, Lolium perenne) and a tropical forage, Megathyrsus maximus (MM). Tannins were added to the substrate at a concentration of 30 mg g-1. MM presented higher and delayed gas production (GP), and in vitro dry matter, organic matter and fiber digestibilities (ivDMD, ivOMD and NDFD, respectively) were relatively high but lower than RG. In addition, MM presented higher CH4 production (CH4p) than RG in 24 and 48h. Even though CT of Quebracho induced a decrease in the NDFD, contrary to what was expected, CH4p was greater, although this effect could not be attributed to the presence of CT. The stoichiometric evaluation indicated that while the highest CH4p in Quebracho treatments were associated with acetogenic profiles, CH4p with Lotus did not show any relationship with the volatile fatty acids (VFA) profile, but it did show a relationship with the highest total VFA production and the highest GP.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.53828
      Issue No: Vol. 44 (2022)
  • Effect of growth and carcass traits on likelihood of early pregnancy in
           Nellore heifers raised at intensive nutritional plan

    • Authors: Rones de Paula Junior, Joanis Tilemahos Zervoudakis, Felipe Gomes da Silva
      Abstract: This study evaluated the influence of the quantitative traits measured by real-time ultrasound (adjusted longissimus muscle area [AdjLMA], adjusted rump fat thickness [AdjRFT], and adjusted marbling [AdjMAR]) as well as age at first breeding [AFB] and adjusted weight [AdjWeight], on the probability of occurrence of early pregnancy (EP) in 55 Nellore heifers, and also performed an economic analysis. All calves received supplementation in creep-feeding (ad libitum), and at weaning (average age= 210 ± 30 days; average weight= 241 ± 33 kg) until first breeding by artificial insemination (May to November) all heifers were managed in the same group (two paddocks of 25 ha each evenly covered with Urochloa Marandu Grass) and received protein-energy supplementation (1% of average BW per animal/day). The quantitative variables were collected immediately after timed artificial insemination (average age= 392 ± 27 days; average weight= 431.90 kg), and the pregnancy diagnosis was completed at 30 days following insemination. For economic analysis, two systems were compared (age at first breeding at 13 and 24 months). The greater adjusted weight on the first breeding increased the probability of occurrence of early pregnancy, while the greater adjusted longissimus muscle area reduced. In addition, intensive meat production systems provide greater economic return throughout cow-calf operation.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.53847
      Issue No: Vol. 44 (2022)
  • Practical meliponiculture: use of trap boxes to control Tracuá Carpenter
           ants (Camponotus atriceps Smith, 1858), an important natural enemy

    • Authors: Mikail Olinda de Oliveira, Marcelo Casimiro Cavalcante, Isac Gabriel Abrahão Bomfim, Felipe Andrés León Contrera
      Abstract: This study aimed to observe the attractiveness efficiency of trap boxes installed in collective shelters of stingless bee colonies (Melipona flavolineata, Melipona fasciculata and Scaptotrigona aff. depilis), as an alternative method for non-chemical control of tracuá carpenter ants (Camponotus atriceps). The study was conducted at Embrapa Amazônia Oriental, in Belém, Pará, Brazil, from March to August 2015. The results showed that the efficiency of this technique depended on the presence of bee colonies and on the bee species in the collective shelter. Overall, an efficiency of 40.6% was found in the capture of C. atriceps individuals, which rose to 75% considering only collective shelters of M. fasciculata colonies, and to 87.5% for collective shelters of M. flavolineata. Trap boxes installed in collective shelters of S. depilis did not attract any C. atriceps group or individuals. The use of trap boxes in collective shelters of stingless bee colonies of the genus Melipona (M. flavolineata and M. fasciculata) is an efficient alternative method of non-chemical control of tracuá carpenter ants (C. atriceps).
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.54128
      Issue No: Vol. 44 (2022)
  • Beak trimming in japanese quails at initial phase is an alternative to
           reduce the negative effects of feather pecking

    • Authors: Jéssica Moraes Cruvinel, Andressa Takahara Montenegro, Caio Cesar dos Ouros, Kauan de Souza Alves, Gabriela Costa Ribeiro, Tatiane Souza dos Santos, Andrea de Britto Molino, Edivaldo Antônio Garcia
      Abstract: Regarding the lack of standardized methods for beak trimming to reduce feather pecking in Japanese quail, the present study aimed to compare two ages and 3 methods of beak trimming, evaluating the performance, egg quality and feather pecking. One-day-old Japanese quails (n = 770; 22 birds cage-1), at the initial phase, and 36-day-old (n = 630; 18 birds cage-1), at the production phase, were assigned to a completely randomized design, consisting of 7 treatments with 5 replicates. The treatments were: non-trimmed (NT), cauterization of approximately 1/3 at 14 days-of-age (CAUT 14) and at 28 days-of-age (CAUT 28), moderately trimmed to approximately 1/3 beak at 14 days-of-age (MOD 14) and at 28 days-of-age (MOD 28), severely trimmed to 1/3-1/2 beak at 14 days-of-age (SEV 14) and at 28 days-of-age (SEV 28). Data were analyzed using Minitab®. The results indicated that beak trimming methods applied did not influence the performance and egg quality. Quails subjected to MOD 28 and SEV (14 and 28) presented lower feed conversion per egg mass compared to NT. However, MOD 14 and SEV were more efficient in preventing feather pecking behavior.
      PubDate: 2022-03-07
      DOI: 10.4025/actascianimsci.v44i1.54129
      Issue No: Vol. 44 (2022)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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