中国畜禽种业2025，Vol.21Issue(8)：42-53,12.
南湖羊体重与体尺指标的相关性、聚类和主成分分析
Correlation,Cluster and Principle Components Analysis of Body Weight and Body Sizes in Southdown × Hu sheep
摘要
Abstract
This experiment provided the relationship between body weight and the body size indicators.Body weight and 8 body size indicators of 6 month old Southdown × Hu(NH)sheep were measured,and SPSS 19.0 software was used to carry out correlation analysis,clustering and principal component analysis.The results showed that the variation amplitudes of body weight(y)and chest width(x5)of NH sheep are relatively large,and the measured values are relatively discrete,with greater potential for selection and improvement.The body weight(y)was highly or significantly correlated with the eight body size indexes.The optimal regression e-quation between body weight(y)and body size in NH sheep was y=-56.680+0.801x5+0.381x1+0.257x2+0.277x3(R=0.826,P＜0.05),and the normalized form of it was y=0.340x5+0.233x1+0.240x2+0.256x3(F=22.558,P＜0.01).The cluster analysis of the body weight(y)and body size indicators ofNH sheep(D=13)was basically consistent with the results of principal components.All indicators were divided into 4 relatively independent principal components,and the cumulative contribution rates of NH sheep was 84.757％,of which the first contribution rate was 51.372％,which could be divided into chest factor,length factor,width factor and height factor.In the process of meat sheep breeding,we should pay attention to the selection the chest depth,chest width and chest circum-ference in order to increase the weight of NH sheep,so as to improve the breeding efficiency.关键词
南湖羊/体重体尺/相关性/聚类/主成分Key words
Southdown × Hu sheep/Body weight body size/Correlation/Cluster/Principle components分类
农业科技引用本文复制引用
施海娜,岳耀敬,徐振飞,张瑞,耿智广,张金霞,牛春蛾,贺怀刚,安雪娇,靳善宁,郑雷..南湖羊体重与体尺指标的相关性、聚类和主成分分析[J].中国畜禽种业,2025,21(8):42-53,12.基金项目
中国农业科学院重大科技任务(CAAS-ZDRW202502) （CAAS-ZDRW202502）
甘肃省科技厅重大专项(22ZD6NA037、21ZD11NM001) （22ZD6NA037、21ZD11NM001）
甘肃省农业农村厅种业攻关项目(GYGG-2024-6) （GYGG-2024-6）
中国农业科学院基本科研业务(Y2024YJ08) （Y2024YJ08）
东西部科技协作专项(24CXNM005) （24CXNM005）
庆阳市重点研发计划(QY-STK-2023A-059) （QY-STK-2023A-059）
甘肃省青年基金(22JR5RM046). （22JR5RM046）
