Effects of heart fatty acid-binding protein genotype on intramuscular fat content in Duroc pigs selected for meat production and meat quality traits

Yoshinobu Uemoto, Keiichi Suzuki, Eiji Kobayashi, Syushi Sato, Tomoya Shibata, Hiroshi Kadowaki, Akira Nishida

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Using multi-trait animal model BLUP, selection was conducted over seven generations for growth rate (DG), real-time ultrasound loin-eye muscle area (LEA), backfat thickness (BF), and intramuscular fat content (IMF) to develop a new line of purebred Duroc pigs with enhanced meat production and meat quality. This study was intended to investigate the relationship between restriction fragment length polymorphism (RFLP) of a heart fatty acid-binding protein (H-FABP) gene and intramuscular fat content (IMF) of this Duroc purebred population. The present experiment examined the RFLP of 499 slaughtered pigs. The DNA was separated from the blood or ear tissue of the pigs, which were slaughtered at 105 kg of body weight. Intramuscular fat content of the longissimus muscle was measured using chemical analysis. A significant difference was detected in the breeding value of IMF among the H-FABP PCR RFLP genotypes. The AA genotype has a significantly larger positive effect on the IMF breeding value than do the Aa and aa genotypes for the MspI RFLP. In addition, the DD genotype has a significantly greater positive effect on IMF breeding value than the Dd and dd genotypes for the HaeIII RFLP. For the HinfI RFLP, the hh genotype has a significantly larger positive effect on IMF breeding value than the HH genotype. Multiple regression analysis was performed using the IMF breeding values as the dependent variable and the three H-FABP genotypes as independent variables. Results revealed that the contribution of the genotypes to variation in IMF breeding values was approximately 40%. These results demonstrated that H-FABP RFLPs affect IMF in this Duroc population.

Original languageEnglish
Pages (from-to)622-626
Number of pages5
JournalAsian-Australasian Journal of Animal Sciences
Volume20
Issue number5
DOIs
Publication statusPublished - 2007 May

Keywords

  • Duroc pigs
  • H-FABP
  • Intramuscular fat
  • RFLP

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Engineering(all)

Fingerprint Dive into the research topics of 'Effects of heart fatty acid-binding protein genotype on intramuscular fat content in Duroc pigs selected for meat production and meat quality traits'. Together they form a unique fingerprint.

Cite this