家畜生态学报2025，Vol.46Issue(10)：44-53,10.DOI:10.3969/j.issn.1673-1182.2025.10.007
陕北白绒山羊体尺、体重与绒毛性状的关联性分析
Association Analysis between Body Size,Body Weight,and Cashmere Traits of Shaanbei White Cashmere Goats
摘要
Abstract
This study,based on empirical data from 878 female Shaanbei White Cashmere goats across three age groups(1,2,and 3 years old),employed Pearson correlation analysis,path analysis,and step-wise multiple regression to systematically investigate the direct and indirect effects of body weight and morphometric traits(body length,body height,cross height,chest circumference,and cannon bone circ-umference)on cashmere traits(fiber length,hair length,fiber fineness,and cashmere yield).Results re-vealed that cashmere yield was significantly positively correlated with chest circumference and body weight across all age groups.The prediction model for cashmere yield at 3 years of age showed the highest fitting accuracy:Y4(cashmere yield)=9.747X1(body weight)+14.302 X5(chest circumference)+10.881 X2(body length)+72.439 X6(cannon bone circumference)+12.552 X4(cross height),with R2=0.563.Chest and cannon bone circumference contributed most significantly.Cashmere length and hair length exhibited more complex,age-dependent patterns:chest circumference and body height were key predictors at 1 year,while the importance of cannon bone circumference and body length increased at 2 and 3 years.In contrast,although fiber fineness could be statistically associated with certain morphometric traits(e.g.,body length and cannon bone circumference),the overall regression fit remained low(R2 ≈0.13-0.25).This study conducted cross-age structural analysis on body traits and fiber characteristics,with path analy-sis revealing the interactive pathways and shifting weights of predictors at different developmental stages.This not only identified key morphological traits for effective prediction of cashmere yield but also offered age-specific breeding strategy references.It is recommended to focus on chest circumference and body length for early screening at the 1-year-old stage.At the 2-year-old stage,emphasize longitudinal skeletal development and limb circumferential coordination.And at the 3-year-old stage,conduct multi-dimensional comprehensive monitoring to accurately estimate cashmere performance.关键词
陕北白绒山羊/体尺/体重/通径分析/产绒量/回归分析Key words
Shaanbei White Cashmere goats/body size/body weight/path analysis/cashmere yield/regression analysis分类
畜牧业引用本文复制引用
罗国洋,李河林,董书伟,张磊,屈雷,暴旭煦,王生明,张耀山,朱海鲸,张刚,王凤红,翟军军,李陇平..陕北白绒山羊体尺、体重与绒毛性状的关联性分析[J].家畜生态学报,2025,46(10):44-53,10.基金项目
陕西省教育厅重点科学研究计划项目(22JY074,23JY089) （22JY074,23JY089）
榆林学院高层次人才科研启动基金资助项目(22GK24,2023GK46) （22GK24,2023GK46）
陕西省自然科学基础研究计划项目(2024JC-YBQN-0240) （2024JC-YBQN-0240）
陕西省秦创原"科学家+工程师"队伍建设项目(2023KXJ-015) （2023KXJ-015）
陕西省创新能力支撑计划项目(2021PT-017) （2021PT-017）
