郏县红牛遗传育种研究进展

为了研究郏县红牛遗传育种研究进展，本文梳理了夏洛来牛、南德温牛、利木赞牛、红安格斯牛、丹麦红牛改良郏县红牛的研究进展，对郏县红牛基因多态性与生长性状的关系和基因遗传变异与生长性状的关系进行了梳理，结果表明：红安格斯牛可以提高郏县红牛的肉用性能和优质牛肉肉块重量，夏洛来牛改良郏县红牛可以提高牛肉品质；ZAG基因、IGF2基因、DGAT2基因、CLPG基因、AQP7基因可以作为生长性状辅助选择的基因，POU1F1基因第6外显子被Hinf I酶切后表现多态性，BB基因型个体可以作为生长性状辅助选择的基因，SREBP-1c基因内含子7区域84 bp缺失位点可以作为生长性状辅助选择的位点。

Recent Progress in Genetic Breeding of Jiaxian Red Cattle

To illustrate the recent progress in genetic breeding of Jiaxian red cattle, the author summarized the relationship of gene polymorphism with growth traits, as well as the genetic variation with growth trait. Related data suggested that crossbreeding with Rad Angus could improve the meat quality and the weight of good cuts; crossbreeding with Charlotte cattle could enhance the beef quality. The author also exhibited that several genes such as ZAG, IGF2, DCAT2, CLPG, and AQP7 were candidates for assistant breeding of growth traits. The sixth exon of POU1F1 showed polymorphism of Hinf I enzyme digestion, and the gene type BB could serve as gene for assistant breeding of growth traits. On the other hand, 84 bp deletion inside the seventh intron of SREBP-1c might had the same potential for that purpose.