Influence of Post-Peak Feed Withdrawal Rate on Egg Production by Broiler Breeders of Different Weights
نویسندگان
چکیده
منابع مشابه
Amino acid requirements of broiler breeders at peak production for egg mass, body weight, and fertility.
Two trials were conducted to determine the amino acid and protein requirements of broiler breeders at peak production. In trial 1, 32-wk-old Cobb 500 broiler breeders with similar BW were selected to determine the digestible amino acid requirement for daily product output (g of egg mass + g of BW gain/b/d) and feed conversion (g of feed/g of product) for Met, Phe, Arg, Ile, Lys, and CP in a 42-...
متن کاملStochastic model of egg production in broiler breeders.
A stochastic model was developed to simulate the egg production of broiler breeders in response to changes in BW. The first step involved the construction of a diagram incorporating dependent and independent variables and their relationships to ovulation rate and egg production from 8 equations based on experimental results. The model was based on existing experimental data, and stochastic proc...
متن کاملEffects of different methionine sources on production and reproduction performance, egg quality and serum biochemical indices of broiler breeders
OBJECTIVE The study was conducted to evaluate the effects of different methionine (Met) sources on production performance, reproduction performance, egg quality and serum biochemical indices in broiler breeders. METHODS After receiving a basal diet (containing 0.25% Met) for a 2-wk pretreatment period, a total of 360 39-wk-old Lingnan yellow broiler breeders were randomly allocated to four tr...
متن کاملThe effect of different feeding schedules on egg quality, blood, and bone parameters in broiler breeders
The aim of this study was to evaluate different feeding schedules and their relationship to calcium (Ca) and phosphorus (P) plasma levels and egg quality of broiler breeders. The feeding schedules were: single feeding at 8:00 AM; twice daily feeding (50% at 8:00 AM and 50% at 3:00 PM) and single feeding at 3:00 PM. 330 female and 45 male Cobb 500 broiler breeders were used from 40 to 60 weeks o...
متن کاملEffect of Different Levels of Fennel Extract and Vitamin D3 on Performance, Hatchability and Immunity in Post Molted Broiler Breeders
A 3 × 3 factorial experiment with three levels of fennel extract (FE) (0, 50, and 100 mg/kg of diet) and three levels of added vitamin D3 (Vit D3) (0, 3500 and 4200 IU/kg of diet), was carried out to evaluate reproductive performanceand immune response of post molted broiler breeders(76-84 weeks).Broiler breeders were weighed at 10 week after molting (74 weeks) then randomly distributed into 36...
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ژورنال
عنوان ژورنال: International Journal of Poultry Science
سال: 2009
ISSN: 1682-8356
DOI: 10.3923/ijps.2009.529.535