Longitudinal genetic analysis for growth traits in the complete diallel cross of rainbow trout (Oncorhynchus mykiss)

文献类型： 外文期刊

第一作者： Wang, Bingqian

作者： Wang, Bingqian;Gu, Wei;Hu, Guo;Gao, Huijiang;Yang, Runqing

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期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

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收录情况： SCI

摘要： A complete diallel cross involving the five strains from Bohai, Denmark, Donaldson, Norway and California and self- breeding within each strain were carried out to evaluate general combining ability, specific combining ability, reciprocal, maternal, linebred effects and heterosis for two growth traits in rainbow trout. To estimate the changes in various genetic and permanent environment effects, longitudinal genetic analysis was employed and implemented with restricted maximum likelihood (REML) method. Using Bayesian information criterion (BIC), the longitudinal genetic model with linear genetic effects and Legendre polynomial of order 2 for permanent environment effects was chosen as the optimal one for body length, whereas genetic effects were constant for body weight. Significance tests for regression effects show that for body length, there were 11 genetic effects changing with growth time. Among all cross combinations, the specific combining ability between Bohai and Donaldson was the smallest across the measuring period. No genetic effect was found to be consistently high or low between the two analyzed traits

分类号： S9

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