青海无角欧拉羊羔羊体重与体尺多元回归分析  

Multiple Regression Analysis of Body Weight and Body Measurement of Qinghai Hornless Oula Lambs

作　　者：庄蕾 阎明毅 余忠祥 张强龙 唐燕花 多杰才让 唐燕青 李永钦 吴森 ZHUANG Lei(Academy of Animal Science and Veterinary Medicine of Qinghai University,Xining 810016)

机构地区：[1]青海大学畜牧兽医科学院青海省高原家畜遗传资源保护与创新利用重点实验室,西宁810016 [2]青海省河南蒙古族自治县生态有机畜牧业技术服务中心,河南县811500 [3]青海省河南蒙古族自治县有机产业科技园区管理委员会,河南县811500 [4]青海省河南蒙古族自治县托叶玛乡农牧业技术服务站,河南县811500 [5]青海省河南蒙古族自治县兽医站,河南县811500

出　　处：《青海畜牧兽医杂志》2021年第6期11-15,共5页Chinese Qinghai Journal of Animal and Veterinary Sciences

基　　金：青海省科学技术厅项目(2019-NK-115,2020-ZJ-947Q,2019-NK-173);国家现代农业产业体系资助项目(CARS-38);青海大学畜牧兽医科学院基本科研业务费自主选题项目(MKY-2019-05,MKY-2019-04);

摘　　要：为探究无角欧拉羊体重与体尺性状的相互关系,利用SPSS软件对653只无角型欧拉羊公羔羊体重与体尺性状进行分析,以体高(X_(1))、体长(X_(2))、胸宽(X_(3))、胸深(X_(4))、尻宽(X_(5))、胸围(X_(6))为自变量,体重(Y)为因变量,采用线性回归分析、通径分析和逐步回归分析方法,建立最优回归方程。结果表明,无角型欧拉羊体重与体尺性状间存在显著(P<0.05)或极显著(P<0.01)正相关,其中体高、胸深、胸围这3个体尺性状与体重之间存在极显著正相关(P<0.01),相关系数R由大到小为体高(0.544)>胸围(0.429)>胸深(0.324),体高、胸深、胸围的直接作用和间接作用对体重的影响极大,因此得到的最优回归方程为Y=0.425X1+0.253X6+0.122X4。In order to research the correlation between body weight and body measurement traits ofhornless Oulasheep,body weight and body measurement traits of 653hornlessOula male lambs were analyzed by SPSS software.Body height(X1),body length(X2),chest width(X3),chest depth(X4),rump width(X5),chest circumference(X6)wereas the independent variables,body weight(Y)wasas the dependent variable,The linear regression analysis,path analysis and stepwise regression analysis methodwereused toestablish optimal regression equation.The results showed that there wassignificant correlation(P<0.05)or extremely significant correlation(P<0.01)between hornlessOulasheepbody measurement traits and body weight.There wasanextremely significant correlation(P<0.01)between the body height,chest depth,and chest circumference.The order ofcorrelation coefficient(R)were body height(0.544)>chest circumference(0.429)>chest depth(0.324)from largest to smallest.The body weightwas extremely effected by body height,chest depth,chest circumference.So that,the optimal regression equation was obtained forY=0.425X1+0.253X6+0.122X4.

关 键 词：欧拉羊 无角型 体重 体尺性状 回归分析 

分 类 号：S826.92[农业科学—畜牧学]