巴什拜羊体重与体尺的相关性及回归分析  

Correlation and regression analysis of body weight and body size in Bashiby sheep

作　　者：姜世琦 陈世尧 阿依古孜力·肉孜买买提 马乐 依明·苏来曼[1] 阿曼凯迪·木哈买提汗 决肯·阿尼瓦什[1] JIANG Shi-qi;CHEN Shi-yao;AYIGUZILI Rouzimaimaiti;MA Le;YIMING Sulaiman;AMANKAIDI Muhamaitihan;JUEKEN Aniwashi

机构地区：[1]新疆农业大学动物科学学院,新疆乌鲁木齐830052 [2]塔城地区畜牧科技推广中心,新疆塔城834799

出　　处：《饲料研究》2022年第14期74-77,共4页Feed Research

基　　金：自治区畜牧兽医局项目(项目编号:2221-LYE1/666505)。

摘　　要：试验旨在研究巴什拜羊体重与体尺指标的相关性关系。选取120只健康周岁的巴什拜羊,公、母各半,测定体尺及体重的各项数据,建立巴什拜羊公羊、母羊体重与体尺指标的最优线性回归方程。结果显示:巴什拜公羊的体重与体尺指标均大于母羊;巴什拜公羊、母羊胸围与体重的相关系数最高(分别为0.905、0.792)。胸围对巴什拜公羊体重的直接作用最大(0.582),体长对巴什拜母羊体重的直接作用最大(0.680);体长对巴什拜公羊体重的间接作用最大(0.705),体高对巴什拜母羊体重的间接作用最大(1.019)。巴什拜公羊的体重与体尺指标最优回归方程为Y_(公)=0.784X_(1)+0.479X_(2)+1.128X_(3)+3.407X_(4)-156.287,巴什拜母羊的体重与体尺指标最优回归方程为Y_(母)=-0.611X_(1)+1.177X_(2)+0.612X_(3)+1.851X_(4)-58.85。研究表明,巴什拜羊的选育和实际生产过程中,重视体重选择的同时应加强对胸围、体长、体高等指标的选择。The experiment was to study the correlation between weight and body size of Bashiby sheep.120 healthy Bashiby sheep were selected at the age of one week,half in male and female,and the data of body size and body weight were measured,the correlation,path and stepwise regression analysis were performed of body weight and body size indexes of Bashiby rams and ewes.The results showed that the correlation coefficients between body weight and body size of Bashiby rams and ewes were the highest (0.905 and 0.792).The direct effect of chest circumference on body weight of Bashiby rams was the highest (0.582),while the direct effect of body length on body weight of Bashiby ewes was the highest (0.680).The indirect effect of body length on body weight of Bashiby rams was the largest (0.705),and the indirect effect of body height on body weight of Bashiby ewes was the largest (1.019).The optimal regression equation of body weight and body size index of Bashiby rams was Y_(male)=0.784X_(1)+0.479X_(2)+1.128X_(3)+3.407X_(4)-156.287.The optimal regression equation of body weight and body size index of Bashiby ewes was Y_(female)=-0.611X_(1)+1.177X_(2)+0.612X_(3)+1.851X_(4)58.85.The experiment indicates that in the selection and breeding of Bashiby sheep and actual production process,the selection of these indexes of chest circumference,body length and body height should be enhanced along with the importance of weight selection.

关 键 词：巴什拜羊 体重 体尺 相关性分析 通径分析 回归分析 

分 类 号：S826[农业科学—畜牧学]