| 成年大足黑山羊体重与体尺通径分析及最优回归模型的建立 |
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| 引用本文： | 陈永军,赵中权,张家骅,李周权,成林,王贤海,王建国.成年大足黑山羊体重与体尺通径分析及最优回归模型的建立[J].国外畜牧学(草食家畜),2008(3). |
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| 作者姓名： | 陈永军 赵中权 张家骅 李周权 成林 王贤海 王建国 |
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| 作者单位： | 西南大学动物科技学院，重庆市大足县畜牧局 |
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| 摘 要： | 运用SPSS14.0分析了成年大足黑山羊体尺与体重的相关关系、体尺对体重的直接和间接作用以及决定程度,最后建立了体重与体尺的最优回归模型.结果表明:胸宽和管围是影响公羊体重最主要的体尺指标,胸围是影响母羊体重最主要的体尺指标.公羊最优回归模型为:Y=19.630-0.940X<,6> 4.346X<,7>,母羊最优回归模型为:Y=-17.942 0.661X4.
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| 关 键 词： | 大足黑山羊 体重 体尺 通径分析 回归模型 |
A Research on Path Analysis and Optimum Regression Mode Between Body Weight and Body Size in the Adult DaZu Black Goats |
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| CHEN Yong-jun,ZHAO Zhong-quan,ZHANG Jia-hua,LI Zhou-quang,CHENG Lin,WANG Xian-hai,WANG Jian-guo.A Research on Path Analysis and Optimum Regression Mode Between Body Weight and Body Size in the Adult DaZu Black Goats[J].Grass-Feeding Livestock,2008(3). |
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| Authors: | CHEN Yong-jun ZHAO Zhong-quan ZHANG Jia-hua LI Zhou-quang CHENG Lin WANG Xian-hai WANG Jian-guo |
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| Abstract: | The SPSS was utilized in this article to separately analyze the correlation of body size and weight in the adult Dazu black goats,the direct and indirect influence of body size to body weight,and the decision degree of body size to body weight.Finally optimum regression mode was established about body weight and body size.The result was indicated: chest width and cannon circumference is the most significant factors that influenced the ram's body weight;the chest circumference is the most significant factor that influenced the ewe's body weight.The ram optimum regression equation was: Y=19.630-0.940X6 4.346X7,the ewe optimum regression equation was: Y=-17.942 0.661X4. |
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| Keywords: | Dazu black goat body weight body size path analysis regression mode |
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