title: A genome-wide association study of growth trait-related single nucleotide polymorphisms in Chinese Yancheng chickens.
abstract: Chicken (Gallus gallus) growth traits are important economic traits, and many studies have been conducted on genetic selection for body weight. However, most of these studies have detected functional chromosome mutations or regions by conventional molecular markers or gene chips. In this study, we performed a new genome-wide association study using specific-locus amplified fragment sequencing (SLAF-seq) technology in purebred Yancheng chickens. Single nucleotide polymorphisms (SNPs) that were significantly associated with phenotypic traits were identified by GAPIT-compressed mixed linear models. Eighteen SNP markers reached 5% Bonferroni genome-wide significance. A region spanning 72.3 to 82.1 Mb on GGA4 had a strong influence on growth traits. Four genes (FAM184B, KCNIP4, MIR15A, and GLI3) were closely associated with body weight. Some SNPs were coincident with previously reported quantitative trait locus regions. Our results would promote the researches of Chinese chickens and accelerate the utilization of Chinese chicken, specially Yancheng chicken.
authors.affiliation: Institute of Agricultural Sciences of Yanchen and Coastal Area of Jiangsu Province, Yancheng, China.
authors.forename: C F
authors.initials: CF
authors.lastname: Jin
authors.affiliation: Institute of Agricultural Sciences of Yanchen and Coastal Area of Jiangsu Province, Yancheng, China.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Chen
authors.affiliation: Institute of Agricultural Sciences of Yanchen and Coastal Area of Jiangsu Province, Yancheng, China.
authors.forename: Z Q
authors.initials: ZQ
authors.lastname: Yang
authors.affiliation: Institute of Agricultural Sciences of Yanchen and Coastal Area of Jiangsu Province, Yancheng, China.
authors.forename: K
authors.initials: K
authors.lastname: Shi
authors.affiliation: Institute of Agricultural Sciences of Yanchen and Coastal Area of Jiangsu Province, Yancheng, China.
authors.forename: C K
authors.initials: CK
authors.lastname: Chen
mesh_terms: D000818:Animals; D002645:Chickens / Q000235:genetics*; D002874:Chromosome Mapping; D016000:Cluster Analysis; D055106:Genome-Wide Association Study; D020641:Polymorphism, Single Nucleotide; D040641:Quantitative Trait Loci; D019655:Quantitative Trait, Heritable