| 晋南牛体重估测公式的研究 |
| |
| 引用本文： | 张明智,郑根福,张有才,逯志敏.晋南牛体重估测公式的研究[J].中国牛业科学,2000,26(2):3-6. |
| |
| 作者姓名： | 张明智 郑根福 张有才 逯志敏 |
| |
| 作者单位： | 1. 山西省运城市畜牧局,044000
2. 山西省运城地区畜牧局,044000 |
| |
| 摘 要： | 为准确、方便、快速地度量晋南牛的体重 ,运用二元回归原理 ,采用只测量体长 (cm)、胸围 (cm)来估测体重。共测量、验证了 6 90头成年晋南公母牛 ,通过一、二、三类不同膘情的测量、称重、验证 ,总结出一类膘情体重 (kg) =(1.91×体长 (cm) +3.4 7胸围 (cm) - 517.6 )× 1.1;三类膘情体重 (kg) =(1.91×体长 (cm) +3.4 7×胸围 (cm) - 517.6 )× 0 .9,即 :晋南牛体重估测公式为体重(kg) =2×体长 (cm) +3.5×胸围 (cm) - 537,校正系数一类膘为 1.1,三类膘为 0 .9。
|
| 关 键 词： | 晋南牛 体重估测 回归原理 体长 胸围 选育 |
| 修稿时间： | 1999-08-21 |
Studies on Body Weight Estimation Formulae of Jinnan Cattle |
| |
| ZHANG Ming-zhi,ZHEN Gen-fu,ZHANG You-cai,LU Zhi-min.Studies on Body Weight Estimation Formulae of Jinnan Cattle[J].China Cattle Science,2000,26(2):3-6. |
| |
| Authors: | ZHANG Ming-zhi ZHEN Gen-fu ZHANG You-cai LU Zhi-min |
| |
| Abstract: | The body length (BL) and heart girth (HG) were measured using the duality regression analysis to make an accurate,easy and quick estimation of body weight (BW) After measuring 690 adult male and female Jinnan cattle which were classified as grade 1, 2, and 3 according to fattening condition, the body weight estimation formula were summarized for grade 1 and 3, BW of grade 1 cattle= (1 91*BL + 3 47*HG - 517 6)*1 1; BW of grade 3 cattle = (1 91*BL + 3 47*HG - 517 6)*0 9; the general BW estimation formulae of Jinnan cattle could be written as following, estimated BW = 2*BL + 3 5*HG - 537, the correction coefficients of grade 1 and 3 were 1 1 and 0 9 respectively |
| |
| Keywords: | Jinnan cattle BW estimation Regression |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
