陕北白绒山羊产羔数与体尺性状的相关及回归分析  

Correlation and Regression Analysis between Litter Size and Growth Traits of Shanbei White Cashmere Goat

作　　者：康雨欣 毕谊 罗弼豪 王珂[1] 白洋洋 何礼邦 王若兰 潘传英[1] 闫海龙[1,3,4,5] 刘锦旺 朱海鲸 屈雷[3,4] 蓝贤勇[1] KANGYuxin;BI Yi;LUO Bihao;WANG Ke;BAI Yangyang;HE Libang;WANG Ruolan;PAN Chuanying;YAN Hailong;LIU Jinwang;ZHU Haijing;QU Lei;LAN Xianyong(College of Animal Science and Technology,Northwest A&F University,Yangling 712100,China;College of Veterinary Medicine,Northwest A&F University,Yangling 712100,China;Life Sciences Research Center,Yulin University,Yulin 719000,China;Shaanxi Provincial Shanbei Cashmere Goat Engineering&Technology Research Center,Yulin 719000,China;Medical College,Shanxi Datong University,Datong 037000,China)

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100 [2]西北农林科技大学动物医学院,陕西杨凌712100 [3]榆林学院生命科学研究中心,陕西榆林719000 [4]榆林学院陕西省陕北绒山羊工程技术研究中心,陕西榆林719000 [5]山西大同大学医学院,山西大同037000

出　　处：《家畜生态学报》2022年第1期16-21,共6页Journal of Domestic Animal Ecology

基　　金：国家自然科学基金项目(No.32060734;No.31760650)。

摘　　要：为探讨陕北白绒山羊产羔数与体尺性状之间的相关性,建立不同产羔数山羊体尺性状间的最优回归方程,对2335只陕北白绒山羊产羔数与体尺性状进行相关性分析,对体长和体尺性状进行通径分析和逐步回归分析,获取不同产羔数山羊体长与体尺之间的最优回归方程。结果表明,双羔个体(n=1390)的体尺性状显著高于单羔个体(n=945)(P<0.01),且产羔数与各体尺性状均呈现正显著相关(P<0.01)。其中,单羔个体(n=945)的胸深(X_(5))对体长(X_(1))有较强的直接作用,胸宽(X_(4))和胸围(X_(6))主要通过与其他体尺性状之间的间接作用影响体长(X_(1));双羔个体(n=1390)的胸宽(X_(4))、体高(X_(2))、管围(X_(7))性状对体长(X_(1))有较强的直接作用,十字部高(X_(3))和胸围(X_(6))主要通过与其他体尺性状之间的间接作用影响体长(X_(1))。将群体分为单羔与双羔,单羔个体的体长与各体尺之间的最优回归方程为:X_(1)=0.219 X_(6)+0.154X_(2)+1.106X_(7)+29.706(R=0.568,P<0.01),双羔个体的体长与各体尺之间的最优回归方程为:X_(1)=0.199X_(6)+0.370X_(5)+0.163X_(2)+31.047(R=0.555,P<0.01)。This study was to analyze the correlation between the litter size and growth trait of Shanbei white cashmere(SBWC)goats and to construct an optimal regression equation of the growth trait of goats with different litter size.2335 shanbei cashmere goats were taken to analyze the correlation between litter size and body traits,in addition,the path analgsis and stepwise analysis were conducted to acquire the optimal regression equation.The results show that the growth performance of double lamb individuals(n=1390)was significantly superior to those of individuals with single lamb(n=945)(P<0.01),additionally,the litter size was positively correlated with the growth traits(P<0.01).In details,in the single lamb population(n=945),the chest depth(X_(5))took a direct effect on body length(X_(1))while the chest width(X_(4))and heart girth(X_(6))mainly exerted an indirect effect on body length through other growth traits;in the double lamb population(n=1390),the chest width(X_(4)),body height(X_(2)),and cannon bone circumference(X_(7))took a strong and direct impact on the body length,in addition,the height at hip cross(X_(3))and heart girth(X_(6))mainly exerted an indirect effect on body length through other growth traits.For the single lamb population,the optimum regression equation was X_(1)=0.219X_(6)+0.154X_(2)+1.106X_(7)+29.706(R=0.568,P<0.01),while for the double lamb population,it was X_(1)=0.199X_(6)+0.370X_(5)+0.163X_(2)+31.047(R=0.555,P<0.01).

关 键 词：陕北白绒山羊 相关性分析 通径分析 回归分析 

分 类 号：S827.91[农业科学—畜牧学]