Correlation between Body Weight and Body Size of Qira Black Sheep under Large-scale Feeding Conditions
With the purpose of searching the relationship between weight and body size in male and female Qira Black Sheep.We used SPSS 26.0 software to apply analysis of the weight data of 50 male Qira Black Sheep and 50 female Qira Black Sheep,in-depth analysis on the weight and body size data of 3-month-old Qira Black Sheep to establish the best weight and body size regression equation.Result display that the best regression equation at 3 months of age was y=0.395x2+0.461x3+0.85x6-46.607;The body size data of 3-month-old Qira Black Sheep,the chest girth and chest depth of female Qira Black Sheep have a significant impact on weight(P＜0.01),with the best regression equation being y=0.402x3+1.012x6-24.801 for female Qira Black Sheep.Body length,chest girth,and chest depth can be important indicators for selecting male Qira Black Sheep at 3 months old;while chest depth and chest girth are crucial indicators for selecting female Qira Black Sheep at 3 months old.
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