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http://dx.doi.org/10.5352/JLS.2021.31.12.1088

Characterization of Myostatin Gene Variants in Jeju Horses  

Choi, Jae-Young (Subtropical Livestock Research Institute, National Institute of Animal Science)
Shin, Kwang-Yun (Jeju Special Self-Governing Province Livestock Promotion Agency)
Lee, Jongan (Subtropical Livestock Research Institute, National Institute of Animal Science)
Shin, Sang-Min (Subtropical Livestock Research Institute, National Institute of Animal Science)
Kang, Yong-Jun (Subtropical Livestock Research Institute, National Institute of Animal Science)
Shin, Moon-Cheol (Subtropical Livestock Research Institute, National Institute of Animal Science)
Cho, In-Cheol (Subtropical Livestock Research Institute, National Institute of Animal Science)
Yang, Byoung-Chul (Subtropical Livestock Research Institute, National Institute of Animal Science)
Kim, Nam-Young (Planning and Coordination Division, National Institute of Animal Science, RDA)
Publication Information
Journal of Life Science / v.31, no.12, 2021 , pp. 1088-1093 More about this Journal
Abstract
Jeju horse (Equus ferus caballus) is a Korean horse breed that has been native to Jeju Island for a long time. Jeju horses are used as racehorses, and their racing ability is a major economic trait. The role of the myostatin (MSTN) gene in skeletal muscle mass has been studied in various mammals, and mutations in the MSTN gene are known to affect the racing ability and stamina of thoroughbreds. In this study, we compared the frequency of mutations in the MSTN gene in several horse breeds, including 1,433 Jeju horses. Among the mutations (ECA18 g.66493737C>T) in the MSTN gene, the long-distance aptitude genotype (TT) was found to have a frequency of 0.826 in Jeju horses, which was higher than that in Halla horses (0.285) and thoroughbreds (0.252). The genotypes and arrival records of Jeju horses were compared according to various distances (400 m, 800 m, 900 m, 1,000 m, 1,110 m, and 1,200 m). According to the results, the CT type showed a faster-reaching record than the TT type in races of less than 1,000 m. However, almost identical results were confirmed in races over 1,110 m. This study suggests that the MSTN mutation in Jeju horses may be related to race distance aptitude. In future research, the data in this study can be used for developing markers related to race distance aptitude and racing abilities in Jeju horses.
Keywords
Halla horses; Jeju horse; MSTN; polymorphism; Thoroughbred;
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