Genetic evaluation of feed efficiency in the breeding population of Fenneropenaeus chinensis "Huanghai No. 2" using phenotypic, pedigree and genomic information

文献类型： 外文期刊

第一作者： Dai, Ping

作者： Dai, Ping;Luan, Sheng;Lu, Xia;Luo, Kun;Cao, Baoxiang;Meng, Xianhong;Kong, Jie;Dai, Ping;Luan, Sheng;Lu, Xia;Luo, Kun;Cao, Baoxiang;Meng, Xianhong;Kong, Jie

作者机构：

关键词： Feed efficiency ratio;Fenneropenaeus chinensis;Heritability;SNP;ssGBLUP

期刊名称：AQUACULTURE INTERNATIONAL （ 影响因子：2.235； 五年影响因子：2.616 ）

ISSN： 0967-6120

年卷期： 2017 年 25 卷 6 期

页码：

收录情况： SCI

摘要： Genetic evaluation of feed efficiency for Fenneropenaeus chinensis was implemented in the breeding population of "Huanghai No. 2" using phenotypic, pedigree and genomic information via a single-step genomic best linear unbiased prediction method (ssGBLUP). Feed efficiency ratio (FER) and average daily gain (ADG) were recorded individually during the grow-out period in 51 full-sib families from the breeding population. High level of inter-individual variation (0.055-0.593) existed in FER. Marginal means of families for FER (0.115-0.388) displayed large inter-family variation. A total of 123 individuals in the pedigree were genotyped with 14,165 single nucleotide polymorphism (SNP) markers, which were used to construct a genomic relationship matrix. Heritability estimate of FER based on pedigree and genomic information reached a moderate level (0.259 +/- 0.101), which was not significantly different from that based on only pedigree (P > 0.05). FER exhibited strong and positive genetic and phenotypic correlations (> 0.80) with ADG. ssGBLUP and the pedigree-based method were found to be consistent in predicting breeding values. No clear differences in accuracy were observed between the two methods through cross-validation. Although the heritability estimate of FER highlights the potential to implement breeding programs for feed efficiency in Huanghai No. 2, indirect selection for FER through increased growth may be a better choice considering the difficulty of measuring individual FER in shrimps.

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