Study on the Relationship Between CAPN Gene Peptide and Fat Content in Sheep Muscle

[Objectives] This study was conducted to speed up the process of improving the quality of lamb breeds in China,and to solve the problems that restrict the development of lamb breeds in China,such as low quality of lamb breeds,low meat production rate,and poor meat quality. [Methods]By studying molecular markers of fat content in sheep muscle,the CAPN gene was used to find polymorphic sites related to fat content in sheep muscle,and the correlation between two polymorphic sites C724 A and A601G on CAPN1 and CAPN2 and fat content in sheep muscle was analyzed. [Results] The two polymorphic sites,C724 A on CAPN1 and A601G on CAPN2 were significantly related to intramuscular fat in mutton. [Conclusions] These two molecular markers can be used as a molecular marker reference when breeding high-quality meat or hair and meat using German Merino sheep breeds.