威宁牛母牛体重与体尺性状的相关分析及回归模型的建立

Correlation Analysis and Establishment of Regression Model between Body Weight and Body Size Traits of Cows of Weining Cattle

中文关键词: 威宁牛  体重  体尺  相关分析  回归模型

英文关键词: Weining Cattle  Body Weight  Body Size  Correlation Analysis  Regression Model

中文摘要:

      为了研究威宁牛母牛体尺性状对体重的影响，采用SAS 9.0软件对威宁牛成年母牛体重与体尺性状进行相关分析和多元线性回归分析，并建立回归方程。结果表明：（1）威宁牛母牛体重（Y）与体高（X1）、体斜长（X2）、十字部高（X3）、胸围（X4）、腹围（X5）、管围（X6）6项体尺性状呈极显著（p＜0.01）的正相关，其中胸围对体重的影响最大，腹围次之，管围最小；（2）建立的回归方程为： y=-486.1576+1.2276x1+0.5526x2+0.9411x3+0.9726x4+1.4113x5+1.1862x6。

英文摘要:

      In order to study the effect between body weight and body size traits of cows of Weining cattle, The SAS 9.0 software was used to conduct correlation analysis and multiple linear regression analysis on the body weight and body size traits of adult cows of Weining cattle, and a regression equation was established. The results showed that: (1) There was a highly significant positive correlation(p<0.01) between the body weight(Y) of cows of Weining cattle and six body size traits, which including body height(X1), body length(X2), height at hip cross(X3), chest circumference(X4), abdominal circumference(X5), and circumference of cannon bone(X6). Among them, chest circumference had the maximum effect for body weight, followed by abdominal circumference, and the circumference of cannon bone was the least; (2) The regression equation is: y=-486.1576+1.2276x1+0.5526x2+0.9411x3+0.9726x4+1.4113x5+1.1862x6。