布拖黑绵羊育成母羊体重与体尺指标相关性分析  

The Correlation Analysis between Body Weight and Body Size of Butuo Black Sheep

作　　者：杨世忠[1] 赵薇 孟元华 陈彬龙 苏茂[1] 陈益 YANG Shizhong;ZHAO Wei;MENG Yuanhua;CHEN Binlong;SU Mao;CHEN Yi(Liangshan Institute of Animal Husbandry and Veterinary Science,Xichang 615000,China;Xichang University,Xichang 615000,China;Agricultural and Rural Bureau of Liangshan Prefecture,Xichang 615000,China)

机构地区：[1]四川省凉山州畜牧兽医科学研究所,西昌615000 [2]西昌学院,西昌615000 [3]凉山州农业农村局,西昌615000

出　　处：《中国草食动物科学》2021年第6期37-40,共4页China Herbivore Science

基　　金：国家现代农业产业技术体系四川创新团队建设专项(sccxtd-2021-14)。

摘　　要：针对布拖黑绵羊生产性能较低、选育提高迫在眉睫的实际情况,运用Excel软件及自制通径分析模板,对136只育成母羊的体重与体尺指标进行了相关分析与通径分析,并建立了最优回归方程。结果表明,胸围(x_(3))、体长(x_(2))和体高(x_(1))是影响体重的主要构成因子;采用多元逐步回归分析法,得出最优多元回归方程y=-38.7096+0.1862x_(1)+0.2004x_(2)+0.5773x_(3)。建议在布拖黑绵羊选育时,综合考虑胸围、体长和体高等体尺指标,能达到最佳选种效果。According to the fact that the production performance of Butuo Black sheep was low and the breeding improvement is imminent,the author used Excel software and self-made path analysis template to carry out correlation analysis and path analysis on the body weight and body size indexes of 136 bred ewes,and established the optimal regression equation.The results showed that chest circumference(x_(3)),body length(x_(2))and body height(x_(1))were the main factors of affecting body weight.Then the multiple stepwise regression analysis was performed and the optimal multiple regression equation was as follows:y=-38.7096+0.1862x_(1)+0.2004x_(2)+0.5773x_(3).The best variety breeding effect could be achieved by comprehensive considering the indexes of chest girth,body length and body height in the variety breeding of Butuo Black sheep.

关 键 词：布拖黑绵羊 体尺 体重 相关性分析 

分 类 号：S826.2[农业科学—畜牧学]