摘要
为探究成年塔里木马鹿体重与体尺之间的关系,试验测定了30头成年塔里木马鹿(公、母各半)的体重(Y)、体斜长(X1)、体高(X2)、头长(X3)、胸围(X4)、胸深(X5)、额宽(X6)、管围(X7)和尾长(X8)等指标,并对其进行了相关性分析、主成分分析及多元线性回归分析.结果表明,公鹿的体重与体斜长、胸围均呈极显著正相关(P<0.01),母鹿的体重与体斜长、头长、胸围、管围均呈极显著正相关(P<0.01),各体尺性状间都存在不同程度的相关性;通过主成分分析,与公鹿体重相关性较大的为体高、胸围,与母鹿体重相关性较大的为胸围、体斜长,与公鹿、母鹿体重相关性最小的均为胸深;塔里木马鹿公鹿体重的最佳回归方程为Y=1.896X1-0.871X3+1.041X5+6.040X7-170.318(R2=0.962,P<0.01),母鹿体重的最佳回归方程为 Y=2.078X3+1.846X5+5.413X7+12.053X8-249.647(R2=0.909,P<0.01).综上所述,在塔里木马鹿育种工作中,公鹿应注重对体斜长、体高、胸围性状的选择,母鹿应加强对体斜长、胸围、管围性状的选择力度.
Abstract
To investigate the relationship between body weight and body size of adult Tarim wapiti,body weight(Y),body slant length(X1),body height(X2),head length(X3),chest circumference(X4),chest depth(X5),forehead width(X6),cannon circumference(X7),and tail length(X8)indexes of 30 adult Tarim wapiti(half male,half female)were measured,and then correlation analysis,principal component analysis,and multiple linear regression analysis were carried out.The results showed that the body weight of bucks was positively correlated with body slant length and chest circumference(P<0.01),the body weight of does was positively correlated with body slant length,head length,chest circumference,and cannon cir-cumference(P<0.01),and there were different degrees of correlation among all body size traits.Through principal compo-nent analysis,the greater correlation with buck body weight was body height and chest circumference,the greater correla-tion with doe body weight was chest circumference and body slant length,and the least correlation with buck and doe body weight was chest depth.The best regression equation for the body weight of the Tarim wapiti buck was Y=1.896X1-0.871X3+1.041X5+6.040X7-170.318(R2=0.962,P<0.01),and that for the body weight of the Tarim wapiti doe was Y=2.078X3+1.846X5+5.413X7+12.053X8-249.647(R2=0.909,P<0.01).In conclusion,in the breeding work of Tarim wapiti,the selection of bucks should focus on the selection of body slant length,body height,and chest circumference traits,and the selection of doe should strengthen the selection of body slant length,chest circumference,and cannon circumference traits.
基金项目
新疆生产建设兵团科技创新计划(2023AB007-02)
维普
万方数据