中国不同牛种DGAT1基因遗传多样性及经济性状关联分析研究进展

doi:10.16431/j.cnki.1671-7236.2019.03.020

Abstract

Abstract:

DGAT1 is the only key enzyme in the synthesis of triglyceride,which plays an important role in animal fat metabolism and lipid deposition in tissues.Therefore,DGAT1 gene,which coded DGAT1,has become to one of the most important candidate genes for studing lactating traits in dairy cows and economic traits in beef cattle.In recent years,with the deepening of relevant research,researchers generally believe that DGAT1 gene has a significant effect on milk yields,milk fat percentage,milk protein rate,lactose rate,milk fatty acid and fertility traits such as average barren days,number of sperm and the age at first calving.The correlation between DGAT1 gene and body fat of beef cattle has also been proved.Therefore,the polymorphisms of DGAT1 gene in different cattle breeds and populations and its association with economic traits has been studied.This paper mainly reviews the genetic polymorphisms of DGAT1 gene and its association with economic traits of dairy cows,beef cattle,buffalo and yak in various regions of China.It has been proved that DGAT1 gene has an important regulatory effect on the lactating traits of dairy cows and the meat quality and growth traits of beef cattle.However,the effects of DGAT1 gene genetic polymorphism was different in different regions and populations due to environmental conditions,breeds and breeding background.Therefore,in order to apply the DGAT1 gene to the breeding,it is necessary to clarify the specific genetic effects of the gene on the research population and make a comprehensive analysis with other candidate genes.

Key words: DGAT1 gene; genetic polymorphism; economic trait; dairy cow; beef cattle; buffalo; yak

CLC Number:

S813.1

WANG Siwei, WANG Xueqing, WANG Kun. Research Progress on the Genetic Polymorphisms of DGAT1 Gene and Its Association with Economic Traits in Chinese Cattle Breeds[J]. , 2019, 46(3): 808-817.

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Research Progress on the Genetic Polymorphisms of DGAT1 Gene and Its Association with Economic Traits in Chinese Cattle Breeds

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