新疆地区多胎细毛羊体重与体尺指标的相关性、通径与回归分析  

Correlation,path,and regression analysis of body weight and body size indexes in Multiparous fine wool sheep in the Xinjiang Region

作　　者：王许 哈尼克孜·吐拉甫[1] 石刚[2] 黄俊诚 李鹏飞 张蓉银 吴伟伟[2] WANG Xu;HANIKIZI·Tulafu;SHI Gang;HUANG Juncheng;LI Pengfei;ZHANG Rongyin;WU Weiwei(College of Animal Sciences,Xinjiang Agriculture University,Urumqi 830052,China;Institute of Animal Science,Xinjiang Academy of Animal Husbandry Sciences,Urumqi 830011,China;Institute of Animal Husbandry Quality Standards,Xinjiang Academy of Animal Husbandry Sciences,Urumqi 830011,China)

机构地区：[1]新疆农业大学动物科学学院,乌鲁木齐830052 [2]新疆畜牧科学院畜牧研究所,乌鲁木齐830011 [3]新疆畜牧科学院畜牧业质量标准研究所,乌鲁木齐830011

出　　处：《黑龙江畜牧兽医》2024年第14期37-40,共4页Heilongjiang Animal Science And veterinary Medicine

基　　金：国家绒毛用羊产业技术体系项目(CARS-39);新疆维吾尔自治区肉毛兼用绒毛用羊品种选育提升计划项目(XJRMY-02)。

摘　　要：为了探究多胎细毛羊的生长规律,试验以239只成年多胎细毛羊为研究对象,测定其体重(Y)、体高(X_(1))、体长(X_(2))、胸围(X_(3))、头长(X_(4))、胸宽(X_(5))、管围(X_(6))7个生长发育指标,利用SPSS 26.0软件进行体重与6个体尺指标的相关性、通径及回归分析,建立体重与体尺指标的最适回归方程。结果表明:多胎细毛羊体重与体尺指标的变异系数从大到小依次为体重(19.76%)>胸宽(11.69%)>胸围(9.66%)>管围(8.40%)>体长(7.30%)>体高(6.59%)>头长(5.89%)。各体尺指标与体重间均呈极显著正相关关系(P<0.01),其中胸围与体重之间的相关系数最大,为0.809。胸围对多胎细毛羊母羊体重的直接作用最大,胸宽对体重的间接作用最大;除胸围外,其余各体尺指标对体重的直接作用均小于间接作用。多胎细毛羊体尺指标对体重的最优回归方程为Y=-60.292+0.387X_(2)+0.689X_(3)+0.579X_(5)(R^(2)=0.702,F=188.188,P<0.01)。说明在对多胎细毛羊进行选育时,应提高对其体长、胸围、胸宽的选择程度,同时也应考虑体高、头长、管围对体重的间接影响。To explore the growth patterns of Multiparous fine wool sheep,239 adult Multiparous fine wool sheep were taken as the research subjects,and seven growth traits including body weight(Y),body height(X_(1)),body length(X_(2)),chest girth(X_(3)),head length(X_(4)),chest width(X_(5)),and cannon bone circumference(X_(6))were detected.SPSS 26.0 software was used to conduct correlation,path,and regression analysis between body weight and the six body measurement indices to establish the optimal regression equation for body weight and body measurements.The results showed that the coefficients of variation for the body weight and size indicators in multiparous fine wool sheep from large to small were body weight(19.76%)>chest width(11.69%)>chest girth(9.66%)>cannon bone circumference(8.40%)>body length(7.30%)>body height(6.59%)>head length(5.89%).All body measurement indicators showed a highly significantly positive correlation with body weight(P<0.01),and the correlation coefficient between chest circumference and body weight was the largest(0.809).The direct effect of chest circumference on the body weight of Multiparous fine wool ewes was the largest,but the direct effect of other body size indexes on body weight was smaller than the indirect effect except for chest circumference.The optimal regression equation of body size indexes to body weight in Multiparous fine wool ewes was Y=-60.292+0.387X_(2)+0.689X_(3)+0.579X_(5)(R^(2)=0.702,F=188.188,P<0.01).The results indicated that the selection of body length,chest circumference and chest width should be improved in the selection and breeding of Multiparous fine wool sheep,and the indirect effects of body height,head length,and cannon bone circumference on body weight should also be considered.

关 键 词：多胎细毛羊 体重 体尺指标 相关性分析 通径分析 逐步回归分析 

分 类 号：S826.86[农业科学—畜牧学]