نتایج جستجو برای: breeder hens

تعداد نتایج: 11002  

Journal: :Brazilian Journal of Poultry Science 2022

The objective of this study was to assess the effect ambient temperature (T) and feeding time (FT) on eggshell thickness (ST) egg weight (EW) broiler breeder hens. Thirty 44-week-old Ross 308 hens were randomly distributed into six environmentally controlled chambers kept in individual cages. Three thermal treatments applied: 20 ºC (T1), cyclic 20-30 (30 °C between 1000 h 1800 h) (T2), 30 (T3)....

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