柯尔克孜羊体尺指标对体重的影响分析  

Analysis of the Effect of Body Size Traits on Body Weight in Kirgiz Sheep

作　　者：努尔阿卜杜拉·吾吉外力 比吉古丽·萨塔尔 努尔乔丽盼·阿尔逊别克 木合塔帕·买买提江 李延伸 依明·苏来曼[1] 牙生江·那斯尔 阿布力米提·托合提 NUERABUDULA·Wujiwaili;BIJIGULI·Sataer;NUERQIAOLIPAN·Aersunbaige;MUHETAPA·Maimaitijiang;LI Yanshen;YIMING·Sulaiman;YASHENGJIANG·Nacier;ABULIMITI·Toheti(College of Animal Science,Xinjiang Agricultural University,Urumqi 830052,China;Livestock and Poultry Breeding and Improvement Station,Kizilsu-Kirghiz Autonomous Prefecture,Atushi,Xinjiang 845350,China;Pamir Walnut Management Co-operative Society,Aktau County,Atushi,Xinjiang 845350,China)

机构地区：[1]新疆农业大学动物科学学院,乌鲁木齐830052 [2]新疆克孜勒苏柯尔克孜自治州畜禽繁育改良站,新疆阿图什845350 [3]新疆阿克陶县帕米尔核桃经营农民专业合作社,新疆阿图什845350

出　　处：《草食家畜》2024年第1期9-18,共10页Grass-Feeding Livestock

基　　金：上海合作组织科技伙伴计划及国际科技合作计划项目“肉羊遗传评估与分子育种服务平台的建立”(2020E01033);新疆维吾尔自治区农区高效肉羊品种选育推广计划(2020-2025年)项目(xjnqry-g-2204);2022年度新疆维吾尔自治区“天山英才”-“三农”骨干人才培养项目(2022SNGGNT071)。

摘　　要：【目的】本试验用各阶段柯尔克孜公、母羊体尺指标对体重变化的影响,分析初生、断奶、8月龄三个阶段体尺指标与生长发育过程中体重的相互关系。【方法】试验随机选取柯尔克孜羊初生羔羊372只、断奶羊321只、8月龄羊223只,共计916只,测定其体重(Y)与体尺指标:体长(X1)、体高(X2)、胸围(X3)、管围(X4),并利用SPSS.27对各阶段柯尔克孜公、母羊进行相关性、通径分析及多元线性回归分析,并建立不同阶段柯尔克孜羊体重与体尺的最优回归模型。【结果】结果表明:柯尔克孜公、母羊体尺指标中体长、体高、胸围、管围与各阶段的(初生、断奶、8月龄)体重呈极显著正相关(P<0.01),不同阶段对体重直接作用最大的体尺指标为胸围,其次为管围和体高。初生、断奶、8月龄阶段柯尔克孜羊三个年龄段的体尺指标中胸围对体重的直接与间接作用均大于其他三个体尺指标对体重的直接与间接作用。【结论】本试验不同阶段的回归方程可以用于柯尔克孜羊早期选育实践,并且研究结果说明在柯尔克孜羊生长发育过程中,不仅要重视体重的选择,还要加强对体尺指标的选择。【Objective】Analysing the effect of body size indexes on body weight of Kirghiz sheep males and females at three stages:newborn,weaned and 8 months old.【Methods】372 newborn lambs,321 weaned lambs and 2238-month-old lambs were randomly selected,totalling 916 lambs,and their body weights(Y)were determined along with body length(X1),body height(X2),chest circumference(X3),tube circumference(X4)and other body size indexes,and the correlation,pass-through and multiple regression analyses were carried out on the data of each stage by using SPSS.27,so that the correlation between body weights of Kirghiz sheep and their body sizes at different stages could be established.The optimal regression model of body weight and body size of Kirghiz sheep at different stages was established.【Results】Body length,body height,chest circumference,tube circumference and body weight at each stage(newborn,weaning,8 months old)were positively correlated with the body size indexes of Kirghiz sheep males and females(P<0.01).The body size index with the largest direct effect on body weight at different stages was chest circumference,followed by tube circumference and body height.The direct and indirect effects of chest circumference on body weight were greater than those of the other three body-size indicators.【Conclusion】The regression equations at different stages can be used in the early selection and breeding practice of Kyrgyz sheep,moreover,in the process of growth and development of Kyrgyz sheep,it is necessary to pay attention not only to the selection of body weight,but also to strengthen the selection of body size indicators.

关 键 词：柯尔克孜羊 相关分析 通径分析 多元回归分析 

分 类 号：S826[农业科学—畜牧学]