| 我国肉用西门塔尔牛群体生长发育性状遗传参数估计及其遗传进展 |
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| 引用本文： | 朱波,李姣,汪聪勇,徐凌洋,陈燕,高雪,张路培,高会江,李俊雅.我国肉用西门塔尔牛群体生长发育性状遗传参数估计及其遗传进展[J].畜牧兽医学报,2020,51(8):1833-1844. |
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| 作者姓名： | 朱波 李姣 汪聪勇 徐凌洋 陈燕 高雪 张路培 高会江 李俊雅 |
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| 作者单位： | 1. 中国农业科学院北京畜牧兽医研究所, 北京 100193;2. 国家肉牛遗传评估中心, 北京 100193;3. 全国畜牧总站, 北京 100125;4. 肉用西门塔尔牛育种联合会, 北京 100193 |
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| 基金项目： | 国家自然科学基金（31802049；31672384）；肉牛产业技术体系岗位科学家经费（18057）；中国农业科学院创新工程（ASTIP-IAS03；CAAS-XTCX2016010）；中国农业科学院北京畜牧兽医研究所基本科研业务费（2019-YWF-YTS-11） |
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| 摘 要： | 旨在对我国国家肉牛遗传评估中心收集的于2000-2019年出生的6 837头肉用西门塔尔牛的各阶段体重和日增重数据进行遗传参数估计，并估计其在2007-2017年取得的遗传进展。本研究利用REML算法估计我国肉用西门塔尔牛各性状遗传力，通过ASREML软件计算所有个体的育种值，再估计各性状的遗传进展。结果显示，我国肉用西门塔尔牛初生重、6月龄重、12月龄重、18月龄重和24月龄重的遗传力估计值分别为0.44、0.42、0.35、0.38和0.46，初生至6月龄日增重、6~12月龄日增重、12~18月龄日增重、18~24月龄日增重的遗传力估计值分别为0.47、0.32、0.36、0.39。我国肉用西门塔尔牛在2007-2017年初生重、6月龄重、12月龄重、18月龄重和24月龄重的平均每年遗传进展为0.46、2.65、4.31、4.12和2.44 kg，初生至6月龄日增重、6~12月龄日增重、12~18月龄日增重、18~24月龄日增重的平均每年遗传进展为0.014、0.016、0.009和0.007 kg·d-1。本研究对我国肉用西门塔尔牛群体生长发育性状的遗传参数做了系统评估分析，并评估了我国肉用西门塔尔牛取得的遗传进展，为下一步我国肉牛遗传改良计划的实施提供理论依据。
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| 关 键 词： | 中国肉用西门塔尔牛 生长发育性状 遗传参数 遗传进展 |
| 收稿时间： | 2020-01-13 |
Genetic Parameter and Genetic Gain Estimation for Growth and Development Traits in Chinese Simmental Beef Cattle |
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| ZHU Bo,LI Jiao,WANG Congyong,XU Lingyang,CHEN Yan,GAO Xue,ZHANG Lupei,GAO Huijiang,LI Junya.Genetic Parameter and Genetic Gain Estimation for Growth and Development Traits in Chinese Simmental Beef Cattle[J].Acta Veterinaria et Zootechnica Sinica,2020,51(8):1833-1844. |
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| Authors: | ZHU Bo LI Jiao WANG Congyong XU Lingyang CHEN Yan GAO Xue ZHANG Lupei GAO Huijiang LI Junya |
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| Institution: | 1. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;2. National Centre of Beef Cattle Genetic Evaluation, Beijing 100193, China;3. National Animal Husbandry Station, Beijing 100125, China;4. Beef Simmental Breeding Alliance, Beijing 100193, China |
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| Abstract: | This study was conducted to estimate the genetic parameters and genetic gains(2007—2017) of weight and average daily gain in different periods of 6 837 Chinese Simmental beef cattle born from 2000 to 2019, where these data were collected by National Center of Beef Cattle Genetic Evaluation. Heritabilities of traits were estimated using restricted maximum likelihood (REML) method in Chinese Simmental beef cattle. The estimated breeding value for each individual was calculated using ASREML software, and the genetic gain for each trait from 2007 to 2017 was also assessed. The results showed that the estimations of heritability for birth weight, 6-month weight, 12-month weight, 18-month weight, 24-month weight were 0.44, 0.42, 0.35, 0.38 and 0.46, respectively; The estimations of heritability of average daily gains of birth-to-six month, 6-12 month, 12-18 month, 18-24 month were 0.47, 0.32, 0.36 and 0.39, respectively in Chinese Simmental beef cattle. Average genetic gain per year from 2007 to 2017 for birth weight, 6-month weight, 12-month weight, 18-month weight, 24-month weight were 0.46, 2.65, 4.31, 4.12 and 2.44 kg, respectively; Average genetic gain per year for average daily gain of birth-to-six month, 6-12 month, 12-18 month, 18-24 month were 0.014, 0.016, 0.009 and 0.007 kg·d-1, respectively. The systematic evaluation on genetic parameters for growth and development traits in Chinese Simmental beef cattle was conducted. Genetic gain for each trait was also assessed, and these results could provide theoretical basis for the future implementation of genetic improvement plan of beef cattle in China. |
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| Keywords: | Chinese Simmental beef cattle growth and development traits genetic parameters genetic gain |
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