育成期无角型欧拉羊体重、体尺的多元回归分析  

Multiple regression analysis of body weight and body size of hornless Oula sheep in the growing period

作　　者：刘梦 庄蕾 余忠祥 阎明毅[1,2,3] 张强龙 韩翠[1,2] 唐燕花 多杰才让 唐燕青 李永钦 吴森 LIU Meng;ZHUANG Lei;YU Zhongxiang;YAN Mingyi;ZHANG Qianglong;HAN Cui;TANG Yanhua;Duojiecairang;TANG Yanqing;LI Yongqin;WU Sen(Academy of Animal Science and Veterinary Medicine,Qinghai University,Xining 810016,China;Academy of Animal Science and Veterinary,Medic ine of Qinghai Province,Xining 810016,China;Key Laboratory of Plateau Animal Genetic Resources Conservation and Innovative Utilization of Qinghai Province,Xining 810016,China;Henan Mongolian Autonomous County Ecological and Organic Animal Husbandry Technical Service Center,Henan 811500,China;Henan Mongolian Autonomous County Organic Industry Science and Technology Park Management Committee,Henan 811500,China;Henan Mongolian Autonomous County Tuoyema Township Agricultural and Animal Husbandry Technical Service Station,Henan 811500,China;Henan Mongolian Autonomous County Animal Husbandry and Veterinary Station,Henan 811500,China)

机构地区：[1]青海大学畜牧兽医科学院,西宁810016 [2]青海省畜牧兽医科学院,西宁810016 [3]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 [4]河南蒙古族自治县生态有机畜牧业技术服务中心,青海河南811500 [5]河南蒙古族自治县有机产业科技园区管理委员会,青海河南811500 [6]河南蒙古族自治县托叶玛乡农牧业技术服务站,青海河南811500 [7]河南蒙古族自治县畜牧兽医站,青海河南811500

出　　处：《黑龙江畜牧兽医》2022年第2期43-47,共5页Heilongjiang Animal Science And veterinary Medicine

基　　金：青海省科学技术厅项目(2019-NK-115;2020-ZJ-947Q;2019-NK-173);财政部和农业农村部:国家现代农业产业技术体系资助项目(CARS-38);牧科院基本科研业务费自主选题项目(MKY-2019-05;MKY-2019-04)

摘　　要：为了分析青海地区育成期无角型欧拉羊的体尺指标与体重的相关性,试验随机选取1.5岁、发育良好、健康的育成期无角型欧拉羊公羊60只、母羊55只,测定羊只体重(Y)和体尺指标[体高(X_(1))、体长(X_(2))、胸宽(X_(3))、胸深(X_(4))、尻宽(X_(5))、胸围(X_(6))],并对体重与体尺指标进行相关分析、通径分析和多元线性回归分析,建立最优回归模型。结果表明:影响无角型欧拉羊公羊体重的主要体尺指标为胸围和体高,且体重与胸围和体高呈极显著正相关(P<0.01)。影响无角型欧拉母羊体重的主要体尺指标为胸宽和体高,且体重与胸宽和体高呈极显著正相关(P<0.01)。育成期无角型欧拉羊公羊体重的最优回归方程为Y=0.992 X_(1)+0.817 X_(6)-93.923,R^(2)=0.859,母羊体重的最优回归方程为Y=0.625 X_(1)+1.331 X_(3)-15.011,R^(2)=0.390,因母羊体重与体尺指标的回归方程中胸宽与体重的相关性较低,所以该方程仅可作为体尺对体重的评测参考。说明在无角型欧拉羊品种选育中,在重视体重选择的同时也要加强体高、胸围、胸宽这些体尺指标的选择。In order to analyze the correlation between body size indexes and body weight of hornless Oula sheep in the growing period, a total of 60 1.5-year-old male hornless Oula sheeps and 55 1.5-year-old female hornless Oula sheeps with well-development and health in the growing period were randomly selected. Body weight(Y) and body size indexes(body height [X_(1)], body length [X_(2)], chest width [X_(3)], chest depth [X_(4)], thorl width [X_(5)] and chest circumference [X_(6)]) were measured. Correlation analysis, path analysis and multiple linear regression analysis were carried out between body weight and body size indexes, and the optimal regression model was established.The results showed that the main body measurement indicators that affect the body weight of male Oula sheeps were chest circumference and body height, and the body weight were extremely significantly positively correlated with chest circumference and body height(P<0.01). The main body measurement indicators that affect the body weight of female Oula sheeps were chest width and body height, and body weight has a very significantly positive correlation with chest width and body height(P<0.01). The formula for estimating the weight of male Oula sheeps during the growing period was Y=0.992 X_(1)+0.817 X_(6)-93.923,R^(2)=0.859;the formula for estimating the weight of female Oula sheeps during the growing period was Y=0.625 X_(1)+1.331 X_(3)-15.011,R^(2)=0.390. Because the correlation between chest width and body weight was low in the regression equation of body weight and body size indexes of ewe, the equation can only be used as a reference for the evaluation of body weight by body size.The results indicated that in the breeding of hornless Oula sheep, the selection of body size indicators such as body height, chest width, and chest circumference should be emphasized while the selection of body weight should be emphasized.

关 键 词：欧拉羊 无角型 体重 体尺指标 通径分析 回归分析 

分 类 号：S826[农业科学—畜牧学]