Estimation of genetic parameters for growth traits in a breeding program for rainbow trout (Oncorhynchus mykiss) in China

被引:15
|
作者
Hu, G. [1 ]
Gu, W. [1 ]
Bai, Q. L. [1 ]
Wang, B. Q. [1 ]
机构
[1] Chinese Acad Fishery Sci, Heilongjiang River Fishery Res Inst, Harbin, Peoples R China
来源
GENETICS AND MOLECULAR RESEARCH | 2013年 / 12卷 / 02期
关键词
Rainbow trout; Genetic parameter; Breeding value; China; ATLANTIC SALMON; BODY-WEIGHT; SELECTION; SURVIVAL; MATURITY; CROSS; FISH;
D O I
10.4238/2013.April.26.7
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Genetic parameters and breeding values for growth traits were estimated in the first and, currently, the only family selective breeding program for rainbow trout (Oncorhynchus mykiss) in China. Genetic and phenotypic data were collected for growth traits from 75 full-sibling families with a 2-generation pedigree. Genetic parameters and breeding values for growth traits of rainbow trout were estimated using the derivative-free restricted maximum likelihood method. The goodness-of-fit of the models was tested using Akaike and Bayesian information criteria. Genetic parameters and breeding values were estimated using the best-fit model for each trait. The values for heritability estimating body weight and length ranged from 0.20 to 0.45 and from 0.27 to 0.60, respectively, and the heritability of condition factor was 0.34. Our results showed a moderate degree of heritability for growth traits in this breeding program and suggested that the genetic and phenotypic tendency of body length, body weight, and condition factor were similar. Therefore, the selection of phenotypic values based on pedigree information was also suitable in this research population.
引用
收藏
页码:1457 / 1467
页数:11
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