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Association of T1740C polymorphism of L-FABP with meat quality traits in Junmu No. 1 white swine

Author(s): Y.H. Zhang L.S. Dai T.H. Ma S.Z. Wang J. Guo F.J. Li S.M. Zhang B.X. Sun D.F. Liu Y. Gao J.B. Zhang

This study was designed to investigate a single nucleotide polymorphism in intron 1 of the liver fatty acid-binding protein (L-FABP) gene in 156 Junmu No. 1 white swine using PCR-single-strand conformational polymorphism. The association between the polymorphism and meat quality traits was also studied. The cloning and sequencing results indicated that the polymorphism in intron 1 was due to a T→C mutation at position 1740 of L-FABP, yielding three genotypes (TT, TC, and CC). Association analysis revealed that the polymorphism had a significant effect on marbling (P 0.05). However, no significant conclusions concerning other traits could be drawn. We tentatively conclude that L-FABP is a candidate gene or a quantitative trait locus-linked gene associated with meat quality traits. This study was designed to investigate a single nucleotide polymorphism in intron 1 of the liver fatty acid-binding protein (L-FABP) gene in 156 Junmu No. 1 white swine using PCR-single-strand conformational polymorphism. The association between the polymorphism and meat quality traits was also studied. The cloning and sequencing results indicated that the polymorphism in intron 1 was due to a T→C mutation at position 1740 of L-FABP, yielding three genotypes (TT, TC, and CC). Association analysis revealed that the polymorphism had a significant effect on marbling (P 0.05). However, no significant conclusions concerning other traits could be drawn. We tentatively conclude that L-FABP is a candidate gene or a quantitative trait locus-linked gene associated with meat quality traits.


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