| 甘肃高山细毛羊(岭东地区)某些经济性状表型相关的通径分析 |
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| 引用本文： | 李友新,张汉武,常中央,汤培文,梁贵仓.甘肃高山细毛羊(岭东地区)某些经济性状表型相关的通径分析[J].甘肃农业大学学报,1984(1). |
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| 作者姓名： | 李友新 张汉武 常中央 汤培文 梁贵仓 |
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| 作者单位： | 甘肃农业大学，甘肃农业大学，甘肃农业大学基础部数学组，甘肃农业大学畜牧系77级，甘肃农业大学畜牧系77级 毕业生，毕业生 |
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| 摘 要： | 本文就甘肃高山细毛羊周岁母羊的污毛量、自然毛长、伸直毛长、细度、密度、强度、伸度、体重、净毛量进行了表型相关系数的计算,确定了这些性状相互联系的性质和程度。通过各性状对净毛量的通径分析,剖析出它们各自对净毛量直接和间接影响的程度;同时确定了污毛量和自然毛长是影响净毛量的主要因素;经过对其他性状的筛选,导出了显著的多元回归方程式:y=-1.268483+0.595002x_1+0.012485x_2,从而为建立新的绵羊选种法和提高选种的效果提供了一定的依据。
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The Path Analysis of Phenotypic Correlation of Some Economic Traits in Gansu Alpine Fine—wool Sheep in Lingdong Area |
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| Abstract: | The calculation of the phenotypic correlation coefficient among characters of double-toothed ewes-greasy weight,natural length,st- retched length,fineness,density,strength,body weight,stretched degree and clean fleece weight is shown in this paper.Thus,the na lure and level of the mutual relationship among the traits are dete- rminded.And it is dissected how much each trait affects the clean fleece-weight directly and indirectly,by using the path analysis of each trait to the clean fleece weight.And it has been ascertained that the greasy weight and the natural length are the main factors which affect the clean fleece-wcight. After culling the traits among which there are no significant differences,a significant multiple regression equation is gained as follows: Y:-1.268483+0.595002X_1+0.0123485X_2 As a result,some new base is provided for the establishment of new methods and the improvement of effects of sheep selecction. |
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