摘要
应用通径分析理论,对建昌黑山羊各年龄组体尺与体重进行了相关分析,并对2岁山羊的体尺与体重的相关系数进行了剖析,且对体重效应作用大小,即决定系数进行了分析。表明:建昌黑山羊各年龄组体尺与体重间有不同程度相关,2岁时对体重起决定作用的体尺性状是胸围,其次为胸围与荐高的互作效应,这是选种选配的关键时期。2岁时其体尺性状与体重的最优回归方程为:y^=-45.9409+0.2841x2+0.
This paper analysized the correlation between body size and body weight of Jianchang black goats from different age groups,especially from2years old group.based on Path Analysis,the paper probed into the relation between the variable body size,moreover it researched the decisive coefficient in goat’s growing.the result showed that body size had a certain correlation to body weight,the decisive character of a2years old goat’s weight was its chest girth,the second factor was the pertinence of its chest girth and back height,so the key period of goat’s hybridization was2years old.and the optimum regression equation was:y^=-45.9409+0.2841x 2 +0.7727x 4
出处
《四川畜牧兽医》
2003年第9期22-23,26,共3页
Sichuan Animal & Veterinary Sciences
