In an experimental cross between Meishan and Dutch Large White and Landracelines, 785 F2 animals with carcass information and their parents were typed formolecular markers covering the entire porcine genome. Linkage was studiedbetween these markers and eight meat quality traits. Quantitative trait locusanalyses were performed using interval mapping by regression under two geneticmodels: 1) the line-cross approach, where the founder lines were assumed to befixed for different QTL alleles and 2) a half-sib model where a unique allelesubstitution effect was fitted within each of the 38 half-sib families. Theline-cross approach included tests for genomic imprinting and sex-specific QTLeffects. In total, three genome-wide significant and 26 suggestive QTL weredetected. The significant QTL on chromosomes 3, 4, and 13, affecting meat color,were only detected under the half-sib model. Failure of the line-cross approachto detect the meat color QTL suggests that the founder lines have similar allelefrequencies for these QTL. This study provides information on new QTL affectingmeat quality traits. It also shows the benefit of analyzing experimental dataunder different genetic and statistical models.