title: Novel SNPs in the caprine stearoyl-CoA desaturase (SCD) and decorin (DCN) genes that are associated with growth traits in Chinese goat breeds.
abstract: Stearoyl-CoA desaturase (SCD) is an iron-containing enzyme involving in the biosynthesis of monounsaturated fatty acids (MUFA) in mammary gland and adipose tissue, while decorin (DCN) consists of a protein core and a single dermatan or chondroitin sulfate glycosaminoglycan chain, contributing multifunctionally to matrix assembly, modulation of the activity of growth factors and cell migration and proliferation. However, few studies have focused on the genetic variability of them in goat. Herein, five Chinese goat breeds (1229 animals) were analyzed. Based on DNA pooling and PCR-RFLP, three nucleotide substitutions, one of which caused a amino acid substitution, were detected in SCD gene and three haploids (A, B, C) were constructed. According to SSCP analysis and DNA sequencing methods, a 2-bp deletion and two other SNPs were found existing in another analyzed gene DCN, and three haploids (X, Y, Z) were built. Associations between the genotypes and the growth traits (body length, body height, chest circumference, cannon circumference) were also analyzed. For SCD gene, genotype CC individuals had significant greater body height in Guanzhong and body length in both Guanzhong and Xinong saanen than genotype BC individuals (P < 0.05). For DCN gene, individuals with genotype XX was obviously higher than that with genotype XY (P < 0.05). These results indicated that genotype CC of SCD gene and genotype XX of DCN gene could be used for the breeding of new breeds of goat in China.
authors.affiliation: College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, No.22 Xinong Road, Yangling, 712100 Shaanxi, China.
authors.forename: Zhongqi
authors.initials: Z
authors.lastname: Chen
authors.forename: Jiajie
authors.initials: J
authors.lastname: Sun
authors.forename: Zhuanjian
authors.initials: Z
authors.lastname: Li
authors.forename: Xianyong
authors.initials: X
authors.lastname: Lan
authors.forename: Chunlei
authors.initials: C
authors.lastname: Zhang
authors.forename: Yujiao
authors.initials: Y
authors.lastname: Qu
authors.forename: Yanli
authors.initials: Y
authors.lastname: Liu
authors.forename: Xingtang
authors.initials: X
authors.lastname: Fang
authors.forename: Chuzhao
authors.initials: C
authors.lastname: Lei
authors.forename: Hong
authors.initials: H
authors.lastname: Chen
mesh_terms: D000818:Animals; D001483:Base Sequence; D001947:Breeding; D002681:China; D058575:Decorin / Q000235:genetics*; D005787:Gene Frequency; D005838:Genotype; D006041:Goats / Q000235:genetics* / Q000254:growth & development* / Q000378:metabolism*; D008969:Molecular Sequence Data; D020641:Polymorphism, Single Nucleotide; D018807:Polymorphism, Single-Stranded Conformational; D017422:Sequence Analysis, DNA; D013230:Stearoyl-CoA Desaturase / Q000235:genetics*
chemical_list: D058575:Decorin; D013230:Stearoyl-CoA Desaturase
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