文献类型: 外文期刊
作者: Tong, Xiong 1 ; Zhang, Zhe 1 ; Jiao, Yiren 1 ; Xu, Jian 1 ; Dang, Hongquyen 1 ; Chen, Ye 2 ; Jiang, Zhiguo; Duan, Junl 1 ;
作者机构: 1.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Natl Engn Res Ctr Breeding Swine Ind, Guangzhou 510642, Guangdong, Peoples R China
2.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Natl Engn Res Ctr Breeding Swine Ind, Guangzhou 510642, Guangdong, Peoples R
关键词: Landrace x Lantang F-2 resource population;Expressed sequence tag;Single nucleotide polymorphism;Genetic marker;Meat quality
期刊名称:JOURNAL OF APPLIED GENETICS ( 影响因子:3.24; 五年影响因子:2.756 )
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收录情况: SCI
摘要: The identification of genetic markers associated with important economic traits is fundamental to improving the productivity and quality of livestock. In this investigation, we searched for 177 expressed sequence tags (ESTs) putatively involved in meat quality from the available pig EST database, and detected eight single nucleotide polymorphisms (SNPs) in eight ESTs. We investigated the associations of these SNPs with 18 carcass and meat quality traits in a Landrace x Lantang F-2 resource population (n = 257). Association analysis revealed that seven SNPs (except E42) were associated with some of the carcass- and meat quality-related traits. Particularly, significant associations of three SNPs (E53, E82, and E36) with backfat thickness traits were observed. Further, the genetic effects of E53 on four live backfat thickness traits were validated in an independent population (n = 221). More investigations about E53 sequence characteristics were performed, i.e., radiation hybrid (RH) mapping, 3'-RACE, and screening analysis of the positive BAC clones. Our research identified the genetic effects of eight EST-derived SNPs on carcass and meat quality traits, and suggested that E53 may be a useful marker for live backfat thickness traits in pig breeding programs.
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