您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Genetic parameters and response to selection for harvest body weight of pacific white shrimp, Litopenaeus vannamei

文献类型： 外文期刊

作者： Sui, Juan 1 ; Luan, Sheng 1 ; Luo, Kun 1 ; Meng, Xianhong 1 ; Lu, Xia 1 ; Cao, Baoxiang 1 ; Li, Wenjia 1 ; Chai, Zhan 1 ; Li 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Key Lab Sustainable Utilizat Marine Fisheries Res, Minist Agr, Yellow Sea Fisheries Res Inst, Nanjing Rd 106, Qingdao 266071, Peoples R China

2.Qingdao Higene Aquabreeding Technol, Laiqing Rd 2-2, Qingdao 266237, Peoples R China

关键词： Litopenaeus vannamei; genetic parameters; genotype by environmental interaction; selection response; harvest body weight

期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）

ISSN： 1355-557X

年卷期： 2016 年 47 卷 9 期

页码：

收录情况： SCI

摘要： Genetic parameters and response to selection were estimated for the harvest body weight of Litopenaeus vannamei. The data consisted of 24072 progeny from 178 sires and 171 dams in two generations (G(0) and G(1)) with a nested mating structure. All families were randomly divided into two groups and then cultured in two farms at different locations (Huanghua and Qingdao). The heritability estimates from G(0) and G(1) were 0.278 +/- 0.136 and 0.423 +/- 0.065 respectively. Over two generations, the heritability estimate was 0.335 +/- 0.087, and the common environmental effect was 0.084 +/- 0.031. A bivariate animal model was used to estimate variance and covariance components, whereby the body weight in the two farms was treated as a genetically distinct trait. Genetic correlation was close to unity (0.943 +/- 0.066), indicating that a genotype by environmental interaction for harvest body weight was small. The response to selection in harvest body weight was estimated using two methods (the realized and predicted responses). The realized response was estimated from the difference in the least squares means of body weight for the selection and control populations. The predicted response was obtained from the difference in the mean estimated breeding values between generations. The realized response was 2.30%, while the predicted responses were 2.00% and 1.37% for within- and across-generation datasets using two sets of genetic parameters respectively. The results would provide crucial information in pacific white shrimp breeding programs in China.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台