摘要
本文运用SAS软件分别分析了海南后备黑山羊和成年黑山羊的体尺与体重间的相关、体尺对体重的直接和间接影响以及体尺对体重的决定程度,最后建立了体重与体尺的最优回归模型。结果表明胸围是影响海南黑山羊体重的最主要的体尺因素。选择海南黑山羊快长系时应在选择体重的同时,加强对胸围的选择力度。海南黑山羊后备羊及成年羊体尺对体重的最优回归模型分别为:Y=-45.1117+0.2909X2+0.4115X3+0.6781X4+0.6815X6和Y=-46.3559+0.1802X2+0.4448X3+0.7701X4+0.8720X6。
The correlation between body size and body weight, the direct and indirect effect of body size to body weight and the decision factors of body size to body weight of Hainan young and adult black goat were analysed by SAS software. In this paper. Finally,the optimum regression equations were established respectively. The results showed that the decisive character of Hainan black goat's weight was its chest girth. Therefor, we should not only select its body weight, but also select its chest girth when they formed fast growth group. The optimum regression equations of young and adult were Y=-46.3559+0.1802X2+0.4448X3+0.7701X4+0.8720X6 and Y=-46.3559+0.1802X2+0.4448X3+0.7701X4+0.8720X6 respectively.
出处
《家畜生态学报》
2005年第1期49-53,共5页
Journal of Domestic Animal Ecology
