| 中国西门塔尔牛育种效果分析 |
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| 引用本文： | 任红艳,许尚忠,李俊雅,杨雪丽.中国西门塔尔牛育种效果分析[J].中国草食动物,2004,24(1):8-10. |
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| 作者姓名： | 任红艳 许尚忠 李俊雅 杨雪丽 |
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| 作者单位： | 中国农业科学院畜牧研究所,北京,100094 |
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| 基金项目： | “十五”国家科技攻关计划 (2 0 0 2BA51 4A - 2 - 1 )资助 |
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| 摘 要： | 采用6个国家级种畜场1980～2000年间的数据对中国西门塔尔牛21年来的育种效果进行分析。对主要性状的遗传力、遗传相关进行了估计．并计算出总性能指数。所有性状均采用动物模型并利用MT-DFREML(多性状非求导)软件进行分析。
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| 关 键 词： | 中国 西门塔尔牛 育种效果 品种性状 |
| 文章编号： | 1007-9726(2004)01-0008-03 |
| 修稿时间： | 2003年7月8日 |
Analysis of Breeding Effect of Chinese Simmental Using Open Nucleus Breeding System |
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| Ren Hongyan,Xu Shangzhong,Li Junya,et al.Analysis of Breeding Effect of Chinese Simmental Using Open Nucleus Breeding System[J].China Herbivores,2004,24(1):8-10. |
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| Authors: | Ren Hongyan Xu Shangzhong Li Junya |
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| Abstract: | Data of Chinese Simmental were collected from 6 livestock breeding farms at national level to evaluate the breeding effect of Chinese Simmental over 21 years. Besides evaluating the genetic parameters, we also evaluate the TPI (Total Performance Index) . Inbreeding coefficients were also analyzed in this study. The traits analyzed were 305-day milk yield, milk fat percentage, body weight at 18 months and score of body type. Their heritabilities are 0.35, 0.2, 0.31 and 0.18 respectively. The results indicate that it can control the coefficient of inbreeding effectively using ONBS,and the milk yields have increased greatly over 21 years of breeding. |
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| Keywords: | Chinese Simmental Breeding effect Genetic analysis |
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