Principal Component Analysis between Body Size and Body Weight Index of Leizhou Goats
Objective:In livestock breeding,initial selection of groups based on the principal component enhances the quality of certain traits.Utilizing the principal component with the highest contribution rate for single trait screening can elevate breeding efficiency.Methods:Sixty healthy,similarly-weighted newborn male Leizhou lambs were chosen and fed by free grazing with additional feed until 60 days of age.Eleven metrics,including body weight,height,and length,were assessed using grazing and supplementary feeding.Principal component analysis was performed on these measurements to offer data for the effective evaluation of appearance and informed breeding of Leizhou goats during the weaning phase.Results:Leizhou male lambs exhibited the highest variation in waist angle width,indicating high selection potential.A significant positive correlation of 0.484(P＜0.05)was found between body weight and tube circumference.The traits of Leizhou male lambs can be categorized into four primary components:body,symmetry,characteristic,and width.The primary component had a 31.727%contribution,with eigenvector coefficients for chest depth,frontal width,body skew length,and limb height being 0.432,0.413,0.384,and 0.361,respectively.Conclusion:The main traits influencing male Leizhou lambs are chest depth,frontal width,body skew length,and limb height.
Leizhou goatbody weight and body size traitsprincipal component analysis
国家科技期刊平台
NSTL
万方数据
维普
