甘肃高山细毛羊产毛量估测模型的构建  

Construction of estimation model for wool yield of Gansu alpine fine wool sheep

作　　者：何莉莉 何兆华 赵芳芳 王继卿 刘秀 李少斌 HE Lili;HE Zhaohua;ZHAO Fangfang;WANG Jiqing;LIU Xiu;LI Shaobin(College of Animal Science and Technology/Gansu Provincial Key Laboratory of Herbivore Biotechnology/Gansu Provincial Engineering Laboratory of Cattle and Sheep Genetic Improvement,Gansu Agricultural University,Lanzhou 730070,China)

机构地区：[1]甘肃农业大学动物科学技术学院甘肃省草食动物生物技术重点实验室/甘肃省牛羊基因改良工程实验室,兰州730070

出　　处：《黑龙江畜牧兽医》2023年第19期49-52,共4页Heilongjiang Animal Science And veterinary Medicine

基　　金：国家自然科学基金项目(32060140);甘肃省杰出青年基金项目(21JR7RA857);甘肃农业大学伏羲青年英才项目(Gaufx-03Y04);甘肃农业大学学科团队项目(GAU-XKTD-2022-21)。

摘　　要：为了构建甘肃高山细毛羊的产毛量估测模型,试验选取73只12月龄母羊测量可以提前且容易检测的产毛量(y)、体重(x_(1))、体高(x_(2))、体斜长(x_(3))、胸围(x_(4))、羊毛长度(x_(5))和羊毛纤维直径(x_(6))等性状,筛选其中与产毛量相关性强的性状建立回归方程,从而估测产毛量。结果表明:体重和羊毛长度对甘肃高山细毛羊产毛量产生极显著影响(P<0.01),对产毛量的皮尔森相关系数分别为0.399和0.300。体重和羊毛长度通过直接作用对产毛量产生影响,而体斜长和胸围通过辅助其他性状对产毛量产生间接作用。甘肃高山细毛羊所测性状对产毛量的最优回归方程为y=-1.022+0.067x_(1)+0.213x_(5),R值为0.539,F值为14.365,达到极显著水平(P<0.01)。说明试验构建的回归方程所选的体重与羊毛长度指标对产毛量具有决定性作用,对指导实际生产工作有一定的参考价值。In order to establish a wool yield estimation model of Gansu alpine fine wool sheep,7312-month-old ewes were selected to measure the characteristics of wool yield(y),body weight(x_(1)),body height(x_(2)),body oblique length(x_(3)),chest circumference(x_(4)),wool length(x_(5))and wool diameter(x_(6)),among which the traits strongly correlated with wool yield were screened and used to establish regression equation to estimate hair yield.The results showed that body weight and wool average fiber length had extremely significant effects on the wool yield of Gansu alpine fine wool sheep(P<0.01),and the Pearson correlation coefficients on the wool yield(y)were 0.399 and 0.300,respectively.Body weight and wool length had direct effects on wool yield,while body oblique length and chest circumference(x_(4))had indirect effects on wool yield(y)by assisting other characters.The optimal regression equation of measured traits to wool yield in Gansu alpine fine wool sheep was y=-1.022+0.067x_(1)+0.213x_(5).R value was 0.539,and F value was 14.365,which reached a very significant level(P<0.01).The results indicated that the indexes of weight and wool length selected by the regression equation had certain determining effects on wool yield,and had a certain reference value in practical production.

关 键 词：甘肃高山细毛羊 产毛量 相关性分析 回归方程 估测模型 

分 类 号：S826[农业科学—畜牧学]