Interval mapping of carcass and meat quality traits in a divergent swine cross

An autosomal scan of the swine genome with 119 polymorphic microsatellite (ms) markers and data from 116 F₂ barrows of the University of Illinois Meishan × Yorkshire Swine Resource Families identified genomic regions with effects on variance in carcass composition and meat quality at nominal significance (p-value <0.05), Marker intervals on chromosomes 1, 6, 7, 8 and 12 (SSC1, SSC6, SSC7, SSC8, SSC12) with phenotypic effects on carcass length, 10^th rib backfat thickness, average backfat thickness, leaf fat, loin eye area and intramuscular fat content confirm QTL effects identified previously based on genome wide significance (p-value<0,05). Several marker intervals included nominally significant (p-value<0.05) dominance effects on leaf fat, 10^th rib backfat thickness, loin eye area, muscle pH and intramuscular fat content.