主分量分析及其分类排序在夏洛来肉羊早期选种中的应用研究

Study on the Application of the Principal Component Analysis in Early Selection of Charollais Sheep

本研究借助微型电子计算机,运用主分量分析等现代数量化理论分析方法,对比较复杂的、难以直观分析的夏洛来肉羊的15个体重、体尺性状资料进行了分析处理,最终选出了4月龄体重、70～120d 日增重、胸围、腰角宽、管围、尻面积为主要测量性状的低躯广身体型的肉用羔羊,并给出了羔羊分类排序图,为今后我国肉羊选种选配及品系繁育提供了科学的依据和分析方法。

The complex data of 15 items on body measurements and bodyweight of the Charolais sheep were processed by means of the principalcomponent analysis with the aid of personal computer.The main traits:4-month weaning weight,daily weight gain between 70-120 days heart girth,hipwidth,circumference of cannon bone and rump area are reguired to select theshort thigh type of meat sheep.Classified figure of the lambs was alsodrawn.This study has provided advanced analytical method for the meatsheep breeding.