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

Genet Mol Res. 2013 Jan 30;12(1):235-41. doi: 10.4238/2013.January.30.9.

Abstract

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): genotype CC had more marbling than TC, and TC had more marbling than TT. The polymorphism also had a highly significant effect on intramuscular fat content (P < 0.01). Genotypes CC and TC had higher intramuscular fat content than TT; there was no significant difference between CC and TC (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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Fatty Acid-Binding Proteins / genetics*
  • Food Quality
  • Genotype
  • Introns
  • Meat
  • Polymerase Chain Reaction / methods
  • Polymorphism, Single Nucleotide
  • Quantitative Trait Loci
  • Sequence Analysis, DNA / methods
  • Swine / genetics*

Substances

  • Fatty Acid-Binding Proteins