نتایج جستجو برای: laying hen performance
تعداد نتایج: 1065043 فیلتر نتایج به سال:
The relationship between nutrition and welfare is usually considered to be a direct result of supplying the hen with adequate quantities feed water. This simple notion freedom from hunger thirst belies fact that nutrients play pivotal role in body’s response challenges whether they relate ambient temperature, gastrointestinal health, pathogen exposure, metabolic disorders, or social mental stre...
Egg production curves describe the laying patterns of hen populations over time. The objectives of this study were to fit the weekly egg production rate of selected and nonselected lines of a White Leghorn hen population, using nonlinear and segmented polynomial models, and to study how the selection process changed the egg-laying patterns between these 2 lines. Weekly egg production rates over...
Induced molting of laying hens is a practice used by commercial egg producers to increase the productive lifetime of their flock. However, the conventional method of inducing molt, which involves removal of feed, water, or both as well as a reduction in photoperiod to less than a natural day has drawn criticism due to animal welfare and food safety concerns. The objective of this study was to e...
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