Accurate mapping of the “acid meat” RNgene on genetic and physical maps of pig Chromosome 15

It has been shown that a major gene, called RN, is responsible for the RTN technological yield, a meat quality porcine trait. Experimental families informative for the segregation of RNgene were constituted from animals belonging to the Laconie composite line. We have previously mapped the RNgene to Chromosome (Chr) 15 (Milan et al. Genet. Sel. Evol. 27, 195-199, 1995). A Chr 15 map was established with 16 markers. The RNgene was found to be located between markers Sw120and Sw936, at 2 cM from Sw936(LOD = 38.1). In addition, by localizing Sw936at 15q21–22 using DISC-PCR, we also located RNon the physical map.