Effect of eggshell temperatures on hatching performance, egg production, and bone morphology of laying hens
نویسندگان
چکیده
منابع مشابه
effect of vitamin c on bone mineral density and eggshell characteristics of laying hens at the peak of egg production
the aim of current study was to determine the effects of vitamin c on bone mineral density (in terms of osteoporosis), eggshell quality and investigation of correlation between these factors in laying hens reared under normal condition. one hundred and ninety two 24 - weeks - old laying hens diet was supplemented with 4 levels of vitamin c (0, 250, 500 and 750 mg/kg diet). the experimental desi...
متن کاملEffect of dietary available phosphorus and phytase on production performance of old laying hens and tibia bone quality
Background: Old laying hens are more prone to dietary calcium (Ca) and phosphorus (P) deficiencies as they absorb Ca and P less efficiently than younger hens. OBJECTIVES: In a 2×2 factorial design, the influence of diets with two levels of available phosphorus (AP) and phytase enzyme on the laying performance, egg quality and tibia bone characteristics of laying hens at their late 2nd producti...
متن کاملThe Effect of Disease, Nutrition and Management on Egg and Eggshell Quality in Laying Hens
Egg and eggshell quality were assessed under three different circumstances: challenge with infectious bronchitis virus (IBV) of complete-fed and choice-fed Isa Brown laying hens; the provision of calcium supplement in the form of either oyster shell or limestone chips and either choice-fed or included in a complete ration; a comparison of three different strains before, during and after an indu...
متن کاملEffect of dietary protein sources on production performance, egg quality, and plasma parameters of laying hens
OBJECTIVE This study was conducted to evaluate the effects of dietary protein sources (soybean meal, SBM; low-gossypol cottonseed meal, LCSM; double-zero rapeseed meal, DRM) on laying performance, egg quality, and plasma parameters of laying hens. METHODS A total of 432 32-wk-old laying hens were randomly divided into 6 treatments with 6 replicates of 12 birds each. The birds were fed diets c...
متن کاملEffects of Fennel Extract on Egg Production, Antioxidant Status and Bone Attributes of Laying Hens Administered Carbon Tetrachloride
This study was conducted to investigate the effects of fennel ethanol extract on egg production, serum parameters, and bone attributes of laying hens administered carbon tetrachloride (CCl4). A total of 192 Hy-Line W-36 laying hens were assigned to four treatments of four replications in a completely randomized design for 9 weeks (36-44 weeks of age). Experimental groups consisted of 1) positiv...
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ژورنال
عنوان ژورنال: TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES
سال: 2021
ISSN: 1303-6181
DOI: 10.3906/vet-2006-31