坝上长尾鸡育雏育成期生长曲线拟合研究  

Growth curve fitting of Bashang long-tail chicken during growth and development

作　　者：刘小辉[1,2] 李祥龙[1] 李杰[1] 逯春香 

机构地区：[1]河北科技师范学院动物科技学院,河北秦皇岛066004 [2]河北农业大学动物科技学院,河北保定071001

出　　处：《浙江农业学报》2015年第5期746-750,共5页Acta Agriculturae Zhejiangensis

基　　金：河北省现代农业产业技术体系蛋鸡产业创新团队;河北省科技计划项目"坝上长尾鸡群体恢复与开发利用"(15226302D);河北省高校创新团队领军人才培育计划(LJRC004)

摘　　要：为分析坝上长尾鸡生长发育规律,采用Logistic,Gompertz及Von Bertalanffy三种非线性数学模型对坝上长尾鸡体质量累积生长曲线进行拟合与分析,对比评价3个模型的拟合效果。结果表明,Gompertz及Von Bertalanffy模型残差平方和较小,拟合度(R2)达到0.997以上,但Von Bertalanffy模型对初始体质量的估计偏差较大,Gompertz模型拟合效果最好。公鸡体质量生长Gompertz模型为Y=2015.524e-4.218exp(-0.146t),母鸡体质量生长Gompertz模型为Y=1396.131e-3.849exp(-0.155t),公鸡的极限体质量(2 015.524 g)、拐点周龄(9.859周)、拐点体质量(741.470 g)均大于母鸡(1 396.131 g,8.696周,513.608 g)。To study the law of growth and development of Bashang long-tail chicken, the nonlinear curves of Logistic model, Gompertz model, and Von Bertalanffy model were used to fit the growth dynamic. The results showed that the residual sum of squares of Gompertz and Von Bertalanffy models were smaller and their fitness degrees （ R2 ） were above 0. 997. The Gompertz model had the best effect on fitting with the growth curve. The Gompertz model equation of body weight was Y = 2015. 524e^-4.218exp（-0.146） for male and Y = 1396. 131e^-3.849exp（ -0. 155t） for female, respectively. The maximum applicable adult body weight of cock was 2 015. 524 g which was larger than that of the hen （ 1 396. 131 g）, while the inflection point age of the former （9. 859 weeks） was later than that of the latter （8. 696 weeks）, and critical body weight of the former （741. 470 g） was larger than that of the latter （513. 608 g） too.

关 键 词：坝上长尾鸡 生长曲线 LOGISTIC GOMPERTZ Von BERTALANFFY 

分 类 号：S813.24[农业科学—畜牧学]