منابع مشابه
Interactions between diet composition and genotype of broiler chickens.
Day-old male broiler chickens of fat line (FL) and lean line (LL) (Leclercq et al., 1980) were obtained from INRA (Nouzilly, France). From two weeks of age onwards, both lines were divided into 2 groups, each receiving 1 of 2 isoenergetic diets with substitutions between fat and protein and a constant gross energy and carbohydrate level (low protein diet (LP): 126 vs 242 g protein/kg and low fa...
متن کاملParametric model based assessment of genotype×environment interactions for grain yield in durum wheat under irrigation
The objectives of this study were to assess the genotype (G) by environment (E) interaction of grain yield of durum wheat(Triticum durum Desf.) based on parametric models, additive main effects and multiplicative interaction (AMMI) and joint linear regression models; and compare the relative efficiency of the two models in explaining the GE effects. Twenty-three genotypes were evaluated across ...
متن کاملEfficacy of inactivated velogenic Newcastle disease virus genotype VII vaccine in broiler chickens
Newcastle disease (ND) causes severe economic losses in poultry production. Despite the intensive vaccination regimes of NDV in Egypt, many outbreaks are being reported. The present study focused on the preparation and evaluation of inactivated velogenic Newcastle disease virus vaccine (genotype VII) isolated from Egyptian broiler chicken during 2015-2016. Fifty-five tissue samples including tr...
متن کاملCampylobacter infection of broiler chickens in a free-range environment
Campylobacter jejuni is the most common cause of bacterial gastroenteritis worldwide, with contaminated chicken meat considered to represent a major source of human infection. Biosecurity measures can reduce C. jejuni shedding rates of housed chickens, but the increasing popularity of free-range and organic meat raises the question of whether the welfare benefits of extensive production are com...
متن کاملOchratoxicosis in Broiler Chickens:
This experiment was conducted to evaluate the effects of ochratoxin A (OTA) on the function and histology of the liver, kidney and bursa of broiler chickens fed OTA contaminated rations. Two hundred forty one-day-old male Ross broiler chicks were used, they were randomly divided into 3 dietary experimental groups of 80 birds and given rations containing 0 (control), 400 or 800 μg OTA/Kg feed. T...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1969
ISSN: 0032-5791
DOI: 10.3382/ps.0481553