文章通过分析酰基辅酶A氧化酶(Acyl-Coenzyme A Oxidases 3,ACOX3)基因单核苷酸多态性与鸡脂肪性状的关系,旨在了解该基因对鸡体脂沉积的影响。以东北农业大学高、低脂双向选择品系肉鸡为材料,采用PCR-RFLP方法检测ACOX3基因的多态性,并分析该基因多态性与鸡脂肪性状的关系。结果表明,ACOX3基因c.-228C>T突变位点在肉鸡高、低脂双向选择品系第10、11世代混合群体中,对腹脂重、腹脂率和血浆VLDL浓度有显著影响(P<0.05);c.-442A>C突变位点在第8-11世代混合群体低脂系中,对腹脂重有显著影响(P<0.05);c.27035A>G突变位点在第10、11世代混合群体低脂系中,对血浆VLDL浓度有显著影响(P<0.05);c.16802C>T突变位点在第11世代低脂系中,对腹脂重、腹脂率有显著影响(P<0.05)。结果显示,ACOX3基因对鸡的体脂沉积有重要影响。ACOX3基因c.-228C>T突变位点对鸡脂肪性状有显著影响,可以尝试作为遗传标记对脂肪性状进行分子标记辅助选择。
This study was designed to identify molecular markers single nucieotide polymorphisms(SNPs) of MHC B-F gene and SPOCK1) associated with Salmonella pullorum disease susceptibility/resistance.A two-stage case-control association study was used.In the first study,a small population comprising 401 Partridge chickens(201 cases and 200 controls)was used,and a total of 118 SNPs genotyped.In the second study,a bigger population comprising 1 075 Partridge chickens(527 cases and 548 controls) was used,and SNPs with significant effect determined in the first study were further analysed.In the first study,8 SNPs were significantly associated with S.Pullorum disease susceptibility/resistance,however,after further analysis,only the SNPs rs15001532 and C.513A>T were found to be significantly associated with S.Pullorum disease susceptibility/resistance.The relative risk test demonstrated that the AA genotype of rs15001532 resulted in a higher risk of S.Pullorum infection,whereas birds with the TT genotype of C.513A>T were more susceptible to S.Pullorum infection.This research was based on the researches on human complex diseases.With help of these train of thoughts,some common animal diseases can be studied effectively and the process of candidate gene research for animal disease can be improved.
