Abstract
The polymorphisms of A-FABP gene which associated with meat quality traits of beef cattle divided in five groups(Qingyang native beef cattle group, Pingliang native beef cattle group, Qinchuan beef cattle group, South Devon beef crossbreed group, Simmental beef crossbreed group) in Gansu was studied. Three types of bands defined as genotypes GG, GC and CC were discovered in the study. According to the results we could find the mutation of c. 408 g > c existed in A- FABP gene’s exon3 area by sequencing analysis of gene in three different kinds. The analysis of A-FABP gene polymorphisms associated with meat quality traits like pressing lose, shear force, cooking loss, marbling score, meat color and pH value, showed that pressing loss with genotype GG was significantly greater than genotype CC (P less than 0.05), shear force with genotype GG was significantly greater than genotype GC and genotype CC (P less than 0.01), cooking loss and pH value with genotype GG were significantly greater than genotype GC (P less than 0.05) and genotype CC (P less than 0.01). This mutation of A-FABP gene could be considered as a locus associated with meat quality traits.
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