子午岭黑山羊母羊体尺与体重的增龄性变化规律及相关性分析

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关键词：子午岭黑山羊；体尺；体重；关联分析

中图分类号：S827 文献标志码：A 文章编号：2097-2172（2025）12-1117-06

doi：10.3969/j.issn.2097-2172.2025.12.007

Age-related Variation and Correlation Analysis Between Body Measurements and Body Weight in Ziwuling Black Nanny Goats

ZHOUChangqing¹，CHENGWenjie1，ZHANGJian1，LIAN Zhengmin’，YANG Youfu² （1.InstituteofAnimalHusbandry，PastureandGrenAgriculture，GansuAcademyofgriculturalSiences，LnzhouGansu7000， China; 2.Management Ofice of Qinwangchuan Agricultural High-tech Industrial Development Demonstration Base， Lanzhou Gansu 73000o， China）

Abstract：Ziwuling Black Goat （also knownas Longdong Black Goat）isaunique local geneticresource in the Longdong regionofGansuProvince，characterizedbyitstolerancetocoarsefodder，trongadaptability，andhighmeatquality.However， influencedbymarketconditionsandfarmingpracticesinrecentyears，itspurebredpopulationhascontinuedtodecline，andthe mechanisms linkinggrowthpaterstobodysizeandweightremainunclear，limitingscientificbreedingandeficientfamingof this bred.Toanalyzethecorelationbetweenbodymeasurementsandbodyweightatdiferentages，providingatheoreticalfoundation andpracticalgudanceforstagespecificbreeding，precisionfeeding，andeficientpopulationexpansionoftisbreed.Atotalof94 nanny goats aged 6，12，24，36，and 48 months were evaluated under confined feeding.Body height （X1 ），bodylength （X2） ，chest girth （X3） ，andbodyweight（Y）wererecorded，andcorelationandpathanalyseswereperformed.Resultsshowedthat ZiwulingBlack naniesexhibitedsignfcantgrowthpotentialat6to12and24to36monthsofage，whilethegrowthratesloweddownafter36 months.Thechestgirthdemostratedtheighestcorelationcoeffcientwithbodyweightacrossallagestages，andpathanalysis revealeditsreatestdirecteect，indicatingthatitisteeybodysizeindicatorinfuencingbodyweightRegressonquatios constructedfordiferentgrowth stagesfurtherdemonstratedthatchest girthmaybeoneofthemoststablepredictorsofbodyweight in Ziwuling Black nannies.

Key Words： Ziwuling Black Goat; Body size; Body weight; Correlation analysis山羊作为人类最早驯化的动物之一[]，在长 期自然与人工选择下形成了丰富的地方遗传资源。（剩余7796字）