Original research article
The Effect of Myogenic Factor 5 Polymorphism on the Meat Quality in Chinese Bos Taurus
2011, 76 (4) p. 373-377
J. A. Ujan, L. S. Zan, H. B. Wang, S. A. Ujan
Abstract
In the present study, we evaluated polymorphism of myogenic factor 5, involved in growth and meat quality traits. Based on PCR-SSCP technology, a novel missense substitution SNP (single-nucleotide polymorphism) g.1142 A > G was identified in the intron1 region of the MyF-5 gene, it causes an amino acid substitution (1142Glutamine/ Glycine1142). Allele frequencies, gene heterozygosity, effective allele number and polymorphism information content of the bovine MyF-5 SNP in three population breeds were determined and evaluated by the χ2 test. Results showed that the polymorphism distribution was not similar in all of the three Bos taurus breeds, the genotype distributions of two cattle breeds Jia xian red and Nanyang did not agree with Hardy–Weinberg equilibrium (P < 0.01); one breed Qinchuan did not deviate significantly from Hardy–Weinberg equilibrium (P > 0.05). The A/G allelic frequencies in these breeds were 0.797/0.202, 0.770/0.229, 0.863/0.136 respectively. The genotype frequencies in Jia xian red and Nanyang cattle breeds showed moderate diversity (0.25< polymorphism information content
Keywords
allelic frequencies, Chinese Bos taurus, myogenic factor 5, meat quality, single nucleotide polymorphism
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