Regression Analysis on Body Weight and Body Traits in Adult Ewes of Altay Sheep
To investigate the correlation between body weight and body traits in Altay sheep adult e-wes,the body weight(y),body height(X1),body length(X2),chest width(X3),chest depth(X4),chest circumference(X5),tube circumference(X6),fat buttock length(X7),fat buttock width(X8),and fat buttock thickness(X9)of 439 healthy and disease-free Altay sheep adult ewes were measured.The data were subjected to descriptive statistics and correlation coefficients using SPSS 26.0 software The path coefficient and stepwise regression in multiple regression analysis were used to establish the optimal re-gression model for weight and body size.The results showed that there was a highly significant positive correlation(P＜0.01)between chest circumference and adult maternal weight of Altay sheep,followed by chest width;the direct and indirect effects of chest circumference on the weight of adult Altay sheep ewes were greater than other traits;The optimal regression model for adult ewes of Altay sheep was Y=0.251X1+0.568X3+0.438X4+3.487X6+0.443X9-42.579.In this model,there was a highly significant linear regression relationship(P＜0.01)between body weight and chest circumference,tube circumfer-ence,chest width,fat buttocks thickness,and body height.This study elucidated the relationship between the body weight and body traits in Altay sheep adult ewes,which could serve as a reference for actual Al-tay sheep breeding practices and improve the breeding speed and efficiency of Altay sheep with high body weight.
万方数据
维普
