德南牛体尺体重相关性及主成分分析

目的]为了研究德南牛生长发育状况。方法]采用SPSS23.0软件对对河南省南阳市某德南牛某养殖场中的321头德南牛成年母牛，体尺指标进行相关性分析,选择5个生长性状进行相关性和主成分分析。结果] 德南牛体高、体斜长、胸围、管围、十字部高、具有极显著相关（P＜0.01）；从主成分的特征向量和贡献率来看，主成分1反映了德南牛的整体外貌结构信息，第2主成分反映了尻部特征。本研究为阐明德南牛的体型外貌特征和选育思路提供了依据。

Correlation and principal component analysis of body size and body weight of Dunant cattle

Objective] In order to study the growth and development of Denan cattle. Method] Using SPSS23.0 software, the correlation analysis was carried out on the body size indexes of 321 Denan cattle adult cows in a certain Denan cattle farm in Nanyang City, Henan Province, and 5 growth traits were selected for correlation and main Ingredient analysis. Results] The body height, body oblique length, chest circumference, tube circumference, and cross height of Denan cattle were highly significantly correlated (P<0.01); from the eigenvectors and contribution rates of principal components, principal component 1 reflects the The overall appearance and structure information of cattle, the second principal component reflects the characteristics of the shiri part. This study provides a basis for clarifying the body shape and appearance characteristics and breeding ideas of Denan cattle.