Thyroglobulin (TG) gene was known to be regulated fat cell growth and differentiation and the endothelial
differentiation sphingolipid G-protein-coupled receptor 1 (EDG1) gene involves blood vessel formation and known to
be affecting carcass traits in beef cattle. The aim of this study was to identify the single nucleotide polymorphisms (SNPs)
in both TG and EDG1 genes and to analyze the association with carcass traits in Korean cattle (Hanwoo). The T354C
SNP in TG gene located at the 3’ flanking region and c.-312A>G SNP located at 3’-UTR of EDG1 gene were used
for genotyping the animals using PCR-RFLP method. Three genotypes were identified in T354C SNP in TG gene and
only two AA and AG genotypes were observed for the c.-312A>G SNP in EDG1 gene. The results indicated that T354C
SNP in TG gene was not significantly associated with carcass traits. However, the c.-312A>G SNP in EDG1 gene had
significant effects on backfat thickness (BF) and yield index (YI). These results may provide valuable information for
further candidate gene studies affecting carcass traits in Korean cattle and may use as marker assisted selection for
improving the quality of meat in Hanwoo.
Key words : TG, EDG1, Carcass traits, Hanwo
