不同模型估计中国荷斯坦牛生产寿命遗传参数

doi:10.11843/j.issn.0366-6964.2019.06.006

畜牧兽医学报 ›› 2019, Vol. 50 ›› Issue (6): 1162-1170.doi: 10.11843/j.issn.0366-6964.2019.06.006

不同模型估计中国荷斯坦牛生产寿命遗传参数

李想¹, 鄢新义¹, 罗汉鹏¹, 刘林², 郭刚³, 王新宇³, 王雅春^1*

1. 中国农业大学动物科学技术学院, 北京 100193;
2. 北京奶牛中心, 北京 100192;
3. 北京首农畜牧发展有限公司, 北京 100176

收稿日期:2018-11-30 出版日期:2019-06-23 发布日期:2019-06-24
通讯作者: 王雅春,主要从事动物遗传育种研究,E-mail:wangyachun@cau.edu.cn
作者简介:李想(1992-),女,河南郑州人,博士生,主要从事奶牛遗传育种研究,E-mail:lixcau@qq.com;鄢新义(1992-),男,湖北荆州人,硕士,主要从事奶牛遗传育种研究,E-mail:yanxinyi620@163.com。李想和鄢新义为同等贡献作者
基金资助:
现代农业（奶牛）产业技术体系建设专项资金（CARS-36）；长江学者和创新团队发展计划（IRT_15R62）；北京三元种业科技股份有限公司自立科研课题（SYZYZ20150003；SYZYZ20160006）；北京市科技计划课题（D171100002417001）；中国农业大学中荷奶业发展中心资助课题“Cow health，welfare&longevity”（SDDDC2016R05）

Genetic Parameters Estimation for Productive Life of Chinese Holsteins by Different Models

LI Xiang¹, YAN Xinyi¹, LUO Hanpeng¹, LIU Lin², GUO Gang³, WANG Xinyu³, WANG Yachun^1*

1. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
2. Beijing Dairy Cattle Center, Beijing 100192, China;
3. Beijing Sunlon Livestock Development Company Limited, Beijing 100176, China

Received:2018-11-30 Online:2019-06-23 Published:2019-06-24

摘要/Abstract

摘要： 旨在估计中国荷斯坦牛生产寿命遗传参数，同时比较不同模型的预测可靠性和稳定性。本研究使用单性状动物模型、单性状公畜模型和多性状动物模型对北京地区29个牧场90 049头中国荷斯坦母牛的生产寿命数据进行遗传参数估计，所有模型均考虑了场、出生年季、头胎产犊月龄组的固定效应，个体加性遗传效应（动物模型）或父亲遗传效应（公畜模型）的随机效应和残差效应。结果表明，单性状动物模型和单性状公畜模型估计的生产寿命遗传力分别为0.052和0.047，多性状动物模型估计的遗传力较为稳定，介于0.057与0.069之间，多性状动物模型的遗传相关在0.779~0.998之间。对于存在大量在群个体（删失记录）的数据，使用基于前三胎数据的多性状动物模型较为合适，模型预测稳定性更高。本研究对中国荷斯坦牛生产寿命进行了遗传评估，为提高牧场效益、实现平衡育种提供了理论基础。

关键词: 中国荷斯坦牛, 生产寿命, 遗传参数, 模型比较

Abstract: The objective of this study was to estimate the genetic parameters of productive life of Chinese Holsteins, and to compare the prediction reliability and stability of different evaluation models. The genetic parameters of productive life records of 90 049 Chinese Holstein cows from 29 herds in Beijing were estimated by single-trait animal model (STAM), single-trait sire model (STSM) and multiple-trait animal models (MTAM). All models used for genetic parameter estimation took into account the fixed effects of herd, birth year-season and group of age at first calving, the random effect of individual additive genetic effect (animal model) or sire genetic effect (sire model), as well as the residual effect. The heritability of productive life derived from the single-trait animal model and single-trait sire model were 0.052 and 0.047, respectively. Multiple-trait animal models were relatively stable, with estimated heritability between 0.057 and 0.069, and the genetic correlations among these traits ranged from 0.779 to 0.998. For the data with large amount of censored records, multiple-trait animal models based on the first 3 lactations are more appropriate, meanwhile these model are more stable. It is the first genetic evaluation for productive life of Chinese Holstein, and these results provide theoretical basis for improving economic efficiency of farms and facilitating balanced breeding in the future.

Key words: Chinese Holstein, productive life, genetic parameter, model comparison

中图分类号:

S823.2

李想, 鄢新义, 罗汉鹏, 刘林, 郭刚, 王新宇, 王雅春. 不同模型估计中国荷斯坦牛生产寿命遗传参数[J]. 畜牧兽医学报, 2019, 50(6): 1162-1170.

LI Xiang, YAN Xinyi, LUO Hanpeng, LIU Lin, GUO Gang, WANG Xinyu, WANG Yachun. Genetic Parameters Estimation for Productive Life of Chinese Holsteins by Different Models[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2019, 50(6): 1162-1170.

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不同模型估计中国荷斯坦牛生产寿命遗传参数

Genetic Parameters Estimation for Productive Life of Chinese Holsteins by Different Models

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