肉仔鸡体蛋白、胴体蛋白、羽毛蛋白潜在沉积速率模型的建立  

Establishment of the models on the potential rates of protein retention of body,carcass,feather in broilers

作　　者：李勇[1] 蔡辉益[1] 刘国华[1] 杨志刚[1] 常文环[1] 张姝[1] 

机构地区：[1]中国农业科学院饲料研究所

出　　处：《中国饲料》2010年第21期17-21,共5页China Feed

基　　金：农业部948项目"肉鸡生长与营养需要动态模型技术"研究

摘　　要：本文通过饲养屠宰试验研究了肉仔鸡体组成、体组分的生长发育规律,并建立了肉仔鸡体蛋白、胴体蛋白、羽毛蛋白潜在沉积速率模型,旨在为建立精确的肉仔鸡生长预测模型奠定基础。试验选取180只体重相近的1日龄爱拔益加(AA)肉仔鸡按性别随机分为两个处理,每个处理5个重复,每个重复18只鸡,肉仔鸡饲喂NRC(1994)营养标准水平日粮。于0、7、14、21、28、35、42日龄08∶00空腹称重后,每个重复选取接近平均体重的两只鸡进行屠宰试验。采用Gompertz生长模型拟合肉仔鸡体组成及体组分随时间变化的关系,采用曲线回归拟合肉仔鸡体蛋白、胴体蛋白、羽毛蛋白重与体重、胴体重及羽毛重间的异速生长关系,同时结合以上拟合方程推导肉仔鸡体蛋白、胴体蛋白、羽毛蛋白潜在沉积速率模型。结果显示,Gompertz生长模型能够较好的拟合肉仔鸡体组成及体组分随时间变化的函数关系,拟合回归方程的相关指数(R2)均达到0.969以上,F检验达到显著水平(P<0.01);曲线回归拟合试验数据得到体组成及体组分间幂函数形式的异速生长方程,其相关指数(R2)均达到0.998以上,F检验达到显著水平(P<0.01);同时根据以上拟合回归方程建立了肉仔鸡体蛋白、胴体蛋白、羽毛蛋白与肉仔鸡体重、胴体重及羽毛重间的函数关系。以上结果表明,可以通过肉仔鸡体重、胴体重及羽毛重对肉仔鸡每日体蛋白、胴体蛋白及羽毛蛋白最大沉积量进行预测。The regulations of growth and development of broilers were investigated and the models on the potential rates of protein retention of body,carcass,feather of broilers were established in order to develop the model of predicting the growth of broilers.One hundred and eighty one-day-old Arbor Acres（AA） broilers were randomly arranged into 2 treatments with 5 replicates of 18 chicks by sex.Broilers were fed standard diet which was formulated according to re-quirements of National Requirement Council（1994）.At the 0,7,14,21,28,35,42 days old,two broilers with body weights near to the average weight of replicate were chosen and slaughtered after being weighted,and the body compositions and components were determined.The equations between live weight,carcass weight,feather weight,body components and time were fitted with Gompertz growth function;The equations of body protein,carcass protein and feather protein with body weight,carcass weight and feather weight were fitted with curve regressions.Based on the fitted equations,the models on the potential rates of protein retention of body,carcass,feather in broilers were established.The results showed that Gom-pertz growth function could well fit the equations in live weight,carcass,feather body components and time.The correlation indexes（R^2） of equations were all above 0.969,and the results of F-test showed that the equations were all significant（P〈 0.01）;power function could well fit the equations of body protein,carcass protein and feather protein with body weight,carcass weight and feather weight,the R2of fitted equations were all above 0.998,and the results of F-test showed that the equations were all significant（P〈0.01）.Based on the equations above,the models on potential rates of protein retention of body,carcass,feather of broilers were established.These results indicated that the models established could be used to pre-dict the potential retention of body protein,carcass protein and feather protein according to the body weight,carcass weig

关 键 词：肉仔鸡 体蛋白 胴体蛋白 羽毛蛋白 蛋白潜在沉积速率 

分 类 号：S811[农业科学—畜牧学]