Evaluation of QTL for carcass merit and meat quality traits in a US commercial Duroc population

Igseo Choi; Ronald O Bates; Nancy E Raney; Juan P Steibel; Catherine W Ernst

doi:10.1016/j.meatsci.2012.04.023

Evaluation of QTL for carcass merit and meat quality traits in a US commercial Duroc population

Meat Sci. 2012 Oct;92(2):132-8. doi: 10.1016/j.meatsci.2012.04.023. Epub 2012 Apr 21.

Authors

Igseo Choi¹, Ronald O Bates, Nancy E Raney, Juan P Steibel, Catherine W Ernst

Affiliation

¹ Department of Animal Science, Michigan State University, East Lansing, MI 48824-1225, USA. Igseo.Choi@ARS.USDA.GOV

PMID: 22578477
DOI: 10.1016/j.meatsci.2012.04.023

Abstract

Putative quantitative trait loci (QTL) regions on 5 chromosomes (SSC3, 6, 12, 15, and 18) were selected from our previous genome scans of a Duroc×Pietrain F(2) resource population for further evaluation in a US commercial Duroc population (n=331). A total of 81 gene-specific single nucleotide polymorphism (SNP) markers were genotyped and 33 markers were segregating. The MDH1 SNP on SSC3 was associated with 45-min and ultimate pH (pHu), and pH decline. PRKAG3 on SSC15 was associated with pHu. The HSPG2 SNP on SSC6 was associated with marbling score and days to 113kg. Markers for NUP88 and FKBP10 on SSC12 were associated with 45-min pH and L*, respectively. The SSC15 marker SF3B1 was associated with L* and LMA, and the SSC18 marker ARF5 was associated with pHu and color score. These results in a commercial Duroc population showed a general consistency with our previous genome scan.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Animals
Color
Commerce
Dietary Fats / analysis
Genotype*
Hydrogen-Ion Concentration
Meat / analysis*
Meat / standards
Polymorphism, Single Nucleotide*
Quantitative Trait Loci*
Swine / genetics
United States

Substances

Dietary Fats