肉仔鸡生长和胴体、羽毛蛋白质沉积模型的建立

选用1日龄爱拔益加肉仔鸡健康雏鸡240只，分性别进行饲养试验和比较屠宰试验。在42d的试验期内，每间隔7d测定试验鸡的体重及相应的体组成。采用Gompertz方程拟合公母肉仔鸡的生长曲线，并通过不同数学公式分别描述肉仔鸡胴体蛋白重和羽毛蛋白重与活重的关系，筛选出最佳模型并与生长曲线组合。分别对生长曲线和筛选的模型进行微分，建立活体增重、胴体蛋白沉积量、羽毛蛋白沉积量与日龄之间的动态函数关系，精确反映肉仔鸡的生长和蛋白质沉积规律。

Modeling Growth, Carcass and Feather Protein Deposition in Broiler Chickens

Two hundred and forty 1-day-old Arbor Acres healthy broiler chickens were used to conduct feeding and comparative slaughter experiments for 42 days. Body weights and corresponding body compositions of chicks were measured at weekly intervals. Gompertz equation was adopted for modeling the growth cure of sexes. Correlations between the weights of carcass protein, feather protein and live body weight of birds at various times were described with different mathematic equations, respectively. The corresponding optimal models screened out were combined with growth curve equations, separately. Differential functions reflected relationships of body gain, carcass protein gain, feather protein gain change with age were established, which imply accurately the laws of growth and protein deposition in broiler chickens.