优质生长性能湖羊的选择

Selection of Hu sheep with excellent growth performance

试验旨在对湖羊体高、体长、胸围等体尺参数与体重进行相关性分析,为机械测量判定湖羊生长性状提供参考。选取2月龄、4月龄、6月龄、9月龄、12月龄的湖羊共139只,测量记录体重、胸围、管围、体高、体长等参数,对测得参数进行线性回归分析。结果显示,体高、体长、月龄对湖羊体重具有较强的相关性(R=0.90)。高体高、高体重的母湖羊产双羔及以上的比例超过50%,产双羔及以上羔羊数占总产羔数的69.89%,平均产羔率达到163.16%。研究表明,可通过选择高体高、高体长的湖羊性状提高生长性能,为机器视角中选择优质生长性能湖羊提供依据。

The purpose of the experiment was to analyze the correlation between body size parameters such as body height,body length,chest circumference and body weight of Hu sheep,so as to provide reference for determining the growth characteristics of Hu sheep by mechanical measurement.A total of 139 Hu sheep aged 2 months,4 months,6 months,9 months and 12 months were selected,and the parameters such as body weight,chest circumference,tube circumference,body height and body length were measured and recorded,and the measured parameters were analyzed by linear regression.The results showed that body height,body length and month age had strong correlation with body weight of Hu sheep(R=0.90).The proportion of double lambing and more was more than 50%,the number of double lambing and more lambs accounted for 69.89%of the total number of lambs,and the average lambing rate reached 163.16%.The study indicates that the growth performance of Hu sheep can be improve by selecting the characters of high body height and high body length,which provided the basis for selecting the Hu sheep with high growth performance from the machine perspective.