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| 南阳黄牛体重曲线拟合的比较分析 | |
| 引用本文： | 张丽,张良志,张爱玲,张琴,李天鹏.南阳黄牛体重曲线拟合的比较分析[J].广东海洋大学学报,2008,28(1):98-100. |
| 作者姓名： | 张丽 张良志 张爱玲 张琴 李天鹏 |
| 作者单位： | 1. 广东海洋大学农学院,广东湛江,524025 2. 西北农林科技大学动物科技学院,陕西杨凌,712100 3. 贵州大学生命科学学院,贵州贵阳,550025 4. 河南省安阳市文蜂区高庄乡农业服务中心,河南,安阳,455000 |
| 基金项目： | 广东海洋人学引进人才科研启动基金 |
| 摘 要： | 根据河南省南阳市黄牛良种繁育场的生产记录,利用Brody、Von Bertallanffy、Gompertz和Logistic 4种生长模型,对南阳黄牛母牛体重生长发育过程进行拟合比较分析。结果表明:VonBertallanffy模型拟合效果较佳,拟合度为0.9800,南阳母牛体重的适宜曲线方程为Y=383.97×(1-0.5484×e-0.1128t)3;南阳母牛的生长拐点月龄为4.41月,拐点体重为113.77kg,成熟体重为383.97kg,与其它牛品种生长发育特征比较,南阳母牛较早熟,成熟体重偏小。 |
| 关 键 词： | 南阳黄牛 体重 生长曲线模型 |
| 文章编号： | 1673-9159(2007)06-0098-03 |
| 修稿时间： | 2007年8月28日 |
Growth Curve Analysis of Body Weight of Nanyang Cattle |
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| ZHANG Li,ZHANG Liang-zhi,ZHANG Ai-ing,ZHANG qin,LI Tian-peng.Growth Curve Analysis of Body Weight of Nanyang Cattle[J].Journal of Zhanjiang Ocean University,2008,28(1):98-100. | |
| Authors: | ZHANG Li ZHANG Liang-zhi ZHANG Ai-ing ZHANG qin LI Tian-peng |
| Abstract: | The objective of this research was to evaluate four non linear functions to describe Nanyang female cattle growth curves. Four growth curve models including Brody, Von Bertallanffy, Gompertz and Logistic founctions were used to analyze the body weight of female Nanyang cattle. The body weight records of cattle were obtained from cattle breeding farm of Nanyang, Henan province. Results showed that the Von Bertallanffy function was best fitted for describing the body weight growth of Nanyang female cattle with the coefficient as follows: the determination was 0.980 0, the function expression was Y=383.97×(1–0.548 4×e-0.112 8t)3. Compared with the other breeds, Nanyang female cattle showed the smaller mature weight (383.97 kg) and 4.41 months was the inflection age of the cattle with the correspondence body weight of 113.77 kg. |
| Keywords: | Nanyang cattle body weight growth curve model |
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