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  Subjects -> AGRICULTURE (Total: 898 journals)
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Showing 1 - 52 of 52 Journals sorted alphabetically
Acta Agriculturae Scandinavica, Section A - Animal Sciences     Hybrid Journal   (Followers: 8)
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 4)
Advances in Animal Biosciences     Full-text available via subscription   (Followers: 9)
African Journal of Livestock Extension     Full-text available via subscription   (Followers: 2)
Alces : A Journal Devoted to the Biology and Management of Moose     Open Access  
Animal Biotechnology     Hybrid Journal   (Followers: 8)
Animal Cells and Systems     Hybrid Journal   (Followers: 4)
Animal Frontiers     Hybrid Journal  
Animal Nutrition     Open Access   (Followers: 18)
Animal Production     Open Access   (Followers: 2)
Animal Production Science     Hybrid Journal   (Followers: 1)
Animal Reproduction Science     Hybrid Journal   (Followers: 6)
Animal Research International     Full-text available via subscription   (Followers: 6)
Animal Science Journal     Hybrid Journal   (Followers: 6)
Archives Animal Breeding     Open Access   (Followers: 3)
Archives of Animal Nutrition     Hybrid Journal   (Followers: 7)
Asian-Australasian Journal of Animal Sciences     Open Access  
Bangladesh Journal of Animal Science     Open Access   (Followers: 2)
Boletim de Indústria Animal     Open Access  
Bulletin of Animal Health and Production in Africa     Full-text available via subscription   (Followers: 2)
Canadian Journal of Animal Science     Hybrid Journal   (Followers: 4)
Hayvansal Üretim     Open Access  
Indian Journal of Animal Sciences     Open Access   (Followers: 6)
Indonesian Journal of Animal and Veterinary Sciences     Open Access  
International Journal of Health, Animal Science and Food Safety     Open Access   (Followers: 3)
International Journal of Livestock Production     Open Access   (Followers: 2)
Journal of Animal Breeding and Genetics     Hybrid Journal   (Followers: 4)
Journal of Animal Science     Hybrid Journal   (Followers: 13)
Journal of Animal Science and Biotechnology     Open Access   (Followers: 4)
Journal of Animal Science and Technology     Open Access   (Followers: 2)
Journal of Applied Animal Nutrition     Hybrid Journal   (Followers: 3)
Journal of Applied Animal Welfare Science     Hybrid Journal   (Followers: 14)
Journal of Applied Poultry Research     Hybrid Journal   (Followers: 4)
Journal of World's Poultry Research     Open Access   (Followers: 3)
Jurnal Agripet     Open Access   (Followers: 1)
Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan     Open Access  
La Chèvre     Full-text available via subscription  
Nigerian Journal of Animal Science     Full-text available via subscription   (Followers: 1)
Nutrición Animal Tropical     Open Access   (Followers: 2)
Online Journal of Animal and Feed Research     Open Access   (Followers: 3)
Open Journal of Animal Sciences     Open Access   (Followers: 4)
Porcine Health Management     Open Access  
Poultry Science     Hybrid Journal   (Followers: 3)
Poultry Science Journal     Open Access   (Followers: 2)
Research in Agriculture, Livestock and Fisheries     Open Access  
Revista Brasileira de Saúde e Produção Animal     Open Access  
Revista de Producción Animal     Open Access  
Revista Mexicana de Ciencias Pecuarias     Open Access   (Followers: 1)
The Professional Animal Scientist     Hybrid Journal  
Tropical Animal Health and Production     Hybrid Journal   (Followers: 1)
Veeplaas     Full-text available via subscription  
World Rabbit Science     Open Access  
Journal Cover
Poultry Science Journal
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2345-6604 - ISSN (Online) 2345-6566
Published by Gorgan University of Agricultural Sciences and Natural Resources Homepage  [1 journal]
  • The Use of Housing System in the Management of Heat Stress in Poultry
           Production in Hot and ...

    • Abstract: There is a gap between the population growth and protein supply in many tropical countries where per capita income is low and the majority of people consume less protein than a daily standard for recommended protein intake. Poultry egg production remains the fastest route to bridging the protein demand-supply gap in these regions. However, poultry are faced with heat stress in the tropics which is deleterious to health and productive performance of laying and meat production. In addition, the problem limits dietary protein supply in the affected countries. The harmful effects of heat stress may be alleviated if attention is paid to sources of heat generation in the design and construction of the open poultry houses. This review discusses the internal climatic conditions of the poultry houses, how the birds respond to them, and their implications on heat management for poultry production. Hence, this paper provides pertinent information for guidance on parameters for open poultry houses architectural design that ensures optimum climatic conditions that will alleviate heat stress problem in poultry production in hot and humid climate.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Effect of In Ovo Injection of VG/GA Vaccine, an Apathogenic Enteric Strain
           of Newcastle Disease ...

    • Abstract: Current vaccination strategies for commercial poultry using live attenuated and inactivated Newcastle disease (ND) vaccines have some limitation and difficulties, and new vaccines with distinct features are needed. Recently, in ovo vaccination technology is concerned as a safe, efficacious, and convenient method. Common ND vaccines used in chickens cannot be employed in ovo due to embryo toxicity and high early mortality. One of the agents that may lead to attenuate ND virus (NDV) strains is aluminum hydroxide (AH) as an adjuvant. The objective of this study was to evaluate AH ability to attenuate NDV for in ovo administration of commercial pullets. Three hundred sixty fertile eggs of a Bovans strain as a factorial arrangement of six doses of the ND vaccine (50% egg infectious (EID50) of 0, 102, 103, 104, 105, and 106) with or without AH were ordered into 12 groups. At 18 d of incubation 0.1 mL of the inoculums was injected into the amniotic fluid of eggs. On the farm, each treatment group was further subdivided into two groups and one of these groups received ND-B1 vaccine on day seven post-hatch. Lowest hatchability was recorded in groups vaccinated with doses of 105 and 106 EID50. On day 21, the highest hem agglutination inhibition (HI) was detected for group vaccinated with dose 102 EID50. Furthermore, hatchability and ND-HI titer were found to be up for pullets received AH in ovo on day 42 posthatch. The results of this study indicated that aluminum hydroxide as an adjuvant could significantly improve hatchability and immune efficacy of pullets when used in ovo. Further, lentogenic VG/GA strain-Avinew will have the potential for application as in ovo vaccine against Newcastle disease, if the vaccine is prepared with sufficient dose.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Effect of Guanidinoacetic Acid Supplementation on Growth Performance and
           Gut Morpholog yin ...

    • Abstract: This study evaluates the effects of different levels of guanidinoacetic acid (GAA) supplement on growth performance and gut morphology in broilers (Ross 308 strain) raised at high altitude (2100 m). A total of 300 one-day-old male broiler chicks (Ross 308 strain) were used in a completely randomized design with five treatments and four replicate pens of 15 birds in each. Five dietary treatments were prepared by supplementing GAA at 0 (control), 0.5, 1.0, 1.5, and 2.0 g/kg to corn-soy based diet and fed to broilers from 1 to 42 days of age. Results indicated that weight gain and feed:gain ratio was significantly improved in the chickens when GAA was supplemented to control diet. Carcass and breast yields were significantly increased by GAA supplementation at 1 g/kg relative to the control. On the other hand, dietary inclusion of GAA significantly (P< 0.05)reduced the proportions of liver, heart and abdominal fat when compared to the control. The villus height, width and absorptive surface area in duodenum, jejunum, and ileum sections were significantly improved at GAA supplementation above 0.5 g/kg. However, the crypt depth showed a significant decrease in all parts of the small intestine compared to the control (P< 0.05). In conclusion, supplementing broiler diets with GAA could be an effective strategy to improve growth performance and gut function.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Response of Broiler Chickens to Triticale-Based Diets Supplemented with
           Microbial Enzymes (1. ...

    • Abstract: A total of 384 day-old male Ross 308 broiler chicks were allocated to 8 dietary treatments to examine the influence of supplementation with xylanase and phytase, individually or in combination, in diets based on two new cultivars of triticale (Bogong and Canobolas). The inclusion of phytase alone in either Bogong or Canobolas diets increased (P < 0.01) feed intake and body weight; however, the effect of grain was not significant. The ileal digestibility of crude protein, gross energy, starch, calcium, and phosphorus was increased by inclusion of phytase and xylanase (P < 0.05). The interaction between xylanase and phytase positively influenced (P < 0.01) the digestibility of crude protein, gross energy, calcium, and phosphorus. Ileal viscosity was decreased (P < 0.05) by the inclusion of xylanase and phytase individually or in combination. The inclusion of phytase and xylanase increased (P < 0.001) the phytate-P degradation. Birds on Bogong-based diet had a higher (P < 0.05) degradation of phytate than those on the Canobolas-based diet. The weight of various visceral organs on day 7 was not affected by the inclusion of enzymes, nevertheless the weight of proventriculus plus gizzard was higher (P < 0.01) for chickens offered Canobolas-based than chicks on the Bogong-based diets. On day 21, the liver weight was reduced (P < 0.001) by the inclusion of phytase. An interaction (P < 0.01) between grain and phytase inclusion led to an increased weight of proventriculus plus gizzard on the Bogong diets with phytase. The inclusion of xylanase increased (P < 0.01) maltase activity at the jejunum on day 7, while it decreased the pancreatic protein content on day 21. The activity of chymotrypsin amidase was reduced (P < 0.01) by the inclusion of phytase. These results show that supplementation of phytase and xylanase to triticale-based diets can improve broiler performance by increasing the activities of some digestive enzymes and nutrient utilization.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Response of Broiler Chickens to Triticale-Based Diets Supplemented with
           Microbial Enzymes (2. ...

    • Abstract: The microbial profiles and activities of microbes in the digesta from chickens on diets containing Bogong or Canobolas with or without inclusion of microbial enzymes were investigated on the 384 day-old male Ross 308 broiler chickens. There was a reduction in population of C. perfringens (P < 0.01) of the ileum as a result of interaction between cultivar and xylanase. On the other hand, in the ceca, the population of entero bacteria were reduced (P < 0.01) by the interaction between grain and phytase, as well as the interaction between grain, xylanase and phytase. Also, the inclusion of xylanase reduced the population of C. perfringensin the ceca. The cecal concentration of acetic acid (P < 0.05) and butyric plus isobutyric acid (P <0.01) was increased in birds received Bogong and Canobolas diets.  Supplementation of xylanase in Bogong diets increased (grain x xylanase, P< 0.05) the acetic acid and lactic acid concentration in ceca while the reversed was the case for Canobolas diets. The ileal and cecal pH was not affected by grain, the inclusion of xylanase and phytase or interactions between these factors. It can be concluded that diets containing Bogong or Canobolas diets supplemented with phytase and xylanase influenced the microbial profile and their activities in gastrointestinal tract which may be due to the variation in nutrient content of these two cultivars.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • The Physiological Responses to Dietary Administration of Zinc Bacitracin
           and Bacillus Mixture ...

    • Abstract: This study investigated the responses of low-weight day-old chicks to zinc bacitracin and Bacillus mixture on growth performance, hematology, intestinal selected microbiota populations, and carcass characteristics. A total of 192 unsexed Lohman MB-202 day-old broiler chicks were randomly allotted to four dietary treatment groups of 48 chicks each (6 replicates of 8 chicks) and fed for 35 days. The four treatments were CONT (basal diet without supplementation), AGP (basal diet with 0.04% zinc bacitracin), PROB (basal diet supplemented with 0.5% Bacillus mixture), and PROB+AGP (basal diet supplemented with 0.5% Bacillus mixture and 0.04% zinc bacitracin). There were no significant differences in final body weight, feed intake, and feed conversion ratio of broilers. The relative weight of thymus was higher (P= 0.01) in AGP than that in PROB and PROB+AGP birds. Birds in PROB+AGP had lower (P= 0.04) values of alanine aminotransferase (ALT) enzyme compared to those in CONT and AGP groups, but the difference was not significant when compared with birds in PROB group. Serum creatinine was lower (P< 0.01) in PROB+AGP than in CONT and AGP birds. Birds in AGP group tended (P = 0.09) to have higher globulin concentration in the serum compared to other birds. There was also a tendency (P = 0.07) for PROB+AGP birds to have higher albumin to globulin ratio compared with other birds. There was more lactic acid bacteria in ileal digesta (P = 0.05) in PROB+AGP than in AGP birds, but the difference was not significant when compared to CONT and PROB birds. Birds in AGP group had higher (P = 0.05) relative breast weight compared to other birds. In conclusion, Bacillus mixture did not affect performance and hematological parameters, but increased the intestinal population of lactic acid bacteria in broiler chicks.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Nutritional Quality of Quail Feeds Used in Urban and Peri-Urban Areas of
           Uganda: Chemical and ...

    • Abstract: Quail production is steadily gaining importance in developing countries like Uganda, particularly in urban and peri-urban areas. However, inappropriate feeding practices such as using the same feed classes across different growth stagesor beyond the recommended growth stageshave been reported among quail farmers. This study evaluated the nutritional properties of quail diets used in urban and peri-urban areas of Uganda. Samples of three classes of quail feeds(starter, grower, and layer diets) were collected from quail farmers and poultry feed suppliers in Mukono, Kampala, and Wakiso districts. The samples were analyzed for crude protein (CP), ether extract, crude fiber (CF), ash, calcium, phosphorus, and gross energy contents and then metabolizable energy (ME) contents of the samples were calculated. The data were compared with the minimum dietary specifications recommended for quails in the tropics. Results revealed a high variation in the nutritional quality and that the diets did not conform to the recommended specifications.The average CPcontents of starter and grower diets from farmers (17% and 15.9%, respectively) and feed suppliers (15.7% and 16.8%, respectively) were far lower (P< 0.05) than the minimum specifications for low-protein diets (24% and 20%, respectively). The average ME contents for all the feed classes were also lower (P< 0.05) than the minimum specifications. The diets were characterized by high ash and CF contents (averages ranged between 17.1-20.2% for ash and 5.5-6.3% for CF). The chemical and energy values obtained were in the range reported for chicken diets (in Uganda), which points to the use of diets formulated for chickens in quail feeding. In conclusion, it is necessaryto train and sensitize quail farmers and feed suppliersabout the benefits of using quail diets with adequate protein content, preferably produced based on protein sources that attract less or no competition from humans. Future research should identify such protein sources, their nutritional properties, and their potential use in quail diets.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Effect of High and Low Stocking Density on Age of Maturity, Egg
           Production, Egg Size ...

    • Abstract: Data of four layers flocks (#31-34) from North Carolina Layer Performance and Management Test of the Department of Agriculture and Consumer Services were used in the meta-analysis to find if an increase in space allowance can affect egg production traits in white and brown layers. Effects of space allowance of 310 and 413 cm2/bird on layers performance were compared in this study. The increase in space allowance resulted in a significant improvement in egg production, egg mass and daily feed intake in both white and brown layers throughout the first (approximately 490-d; P< 0.001) and second (approximately till 760-d; P< 0.05) cycles of egg production.Space allowance did not affect age of maturity and final body weight at the end of first egg production cycle in both types of layers. Increasing birds space allowance resulted in a reduction in the mortality rate of white layers (P< 0.001) in the first egg production cycle and in the first (P=0.015) and second (P=0.027) egg production cycles in brown layers. The increase in space allowance significantly improved egg weight (P< 0.001) in white layers in the first egg production cycle. A significant increase in egg weight was observed in the first (P=0.014) and second (P=0.050) egg production cycles in brown layers in response to increasing birds space allowance. Egg size distribution was significantly influenced by the space allowance during both egg production cycles in white and brown layers. Space allowance is a management tool that can be used to optimize egg production traits, mortality and egg size distribution in both white and brown layers. Space allowance of 413 cm2/bird could significantly improve egg production and egg size distribution in first and second egg production cycle compared to 310 cm2/bird.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Evaluation of Miswak(Salvadorapersica)asaHerbalAdditive in Broiler

    • Abstract: We determined the effects of dietary supplementation of different doses of Miswak (Salvadorapersica) steam and leaf powder on the performance, blood parameters, cecal flora, and carcass traits of broilers. Four hundred and eight one-day old Ross 308 broiler chicks were provided one of the following experimental diets over 42 days:  a basal diet without any additives, or a basal diet supplemented with 0.1%, 0.2%, 0.4%, 0.6%, or 0.8% Miswak powder. Four replicates of 17 birds were allocated to each treatment. Neither broiler performance (body weight gain, feed intake, and feed conversion ratio) during starter (d 1-21), finisher (d 22-42), and the overall period (d 1-42) of the study, nor blood parameters (glucose, triglyceride, cholesterol, high density lipoprotein-cholesterol, low density lipoprotein-cholesterol, and very low density lipoprotein-cholesterol) were influenced by experimental treatments (P > 0.05). Chicks fed diets containing 0.4% Miswak had higher (P< 0.05) cecal Lactobacillus than the control group at day 42. Furthermore, 0.6% and 0.8% Miswak reduced the number of cecal E coli compared to the control diet (P < 0.05). There were no significant differences in carcass yield and the relative weights of thigh, breast, and abdominal fat at day 42 (P > 0.05). In conclusion, we found that supplementation with Miswak powder had no beneficial effects on performance and blood parameters of broilers, but could improve cecal bacteria counts at levels greater than 0.4%.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
  • Effect of Different Levels of Nano-selenium on Performance, Blood
           Parameters, Immunity and ...

    • Abstract: The aim of the present study was to test the hypothesis that nano- seleniuminclusion in broilers’ diets can improve productivity and metabolic functions of broilers.Feed and water were provided ad libitum. A total of 180 one-day old male Ross 308 chicks were randomly assigned to six groups based on a completely randomized design, each with three replicates of 10 birds. One of the groups served as the control (CON) and was given a basal diet without further dietary supplementation, whereas the other five groups were offered the same starterandgrower diets further supplemented with dietary nano-selenium (NS) at 0.1 mg/kg of feed (NS1), 0.2 mg/kg of feed (NS2), 0.3 mg/kg of feed (NS3), 0.4 mg/kg of feed (NS4), and 0.5 mg/kg of feed (NS5). Nano-selenium dietary supplementation significantly improved weight gain and feed conversion ratio in starter (1st-21st day), grower (22nd-42nd day) and whole (1st-42nd) periods of experiment (P< 0.05). At the same time, energy and protein utilization was more efficient in NS supplemented groups than the control (P < 0.05). Breast and drumsticks percentages had higher values in the NS supplemented birds than the control (P < 0.05), while abdominal fat percentage had lower values in the NS supplemented birds than the control (P < 0.05).Significant differences in relative weight of testes were observed between treatments (P< 0.05). Glucose and total protein concentrations in blood plasma were not significantly different among the experimental groups (P >0.05). While, albumin levels in blood were decreased and anti-Newcastle disease hemagglutination-inhibition titer was increased after the dietary supplementation with the nano-selenium (P< 0.05). As conclusion, the current study demonstrated that the supplementation of nano-selenium in broiler diets could improve growth performance, carcass components and immune function, without negative effects on internal organs, and other carcass parameters and gastrointestinal parts.
      PubDate: Sat, 31 Mar 2018 19:30:00 +010
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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Fax: +00 44 (0)131 4513327
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