This study investigated the genetic effects of myogenin gene(MYOG)polymorphism on carcass traits,meat quality traits,and muscle fiber characteristics by analyzing 459 pigs from eight populations at approximately 180 days of age(Meishan,Yorkshire,Landrace,Yorkshire×Meishan F1,Meishan×Yorkshire F1,Landrace×Yorkshire F1,Yorkshire×Landrace F1,and Yorkshire×Meishan F2).Results showed that MYOG exhibited 3 genotypes(AA,AB,BB)in the pig populations.An increase in lean meat percentage was significantly associated with the BB genotype,with increases of 3.57%and 3.28%compared to the AA and AB genotypes,respectively.In the Yorkshire×Meishan F2 population,MYOG genotype was significantly correlated with pH values of the eye muscle and biceps femoris muscle;while in the Yorkshire×Meishan F1 population,the genotype of MYOG was significantly correlated with marbling score(MM2)of biceps femoris muscle.
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