ACCURATE MAPPING OF THE ACID MEAT RN GENE 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 por cine trait. Experimental families informative for the segregation of RN gene were constituted f rom animals belonging to the Laconie composite line. We have previousl y mapped the RN gene to Chromosome (Chr) 15 (Milan et al. Genet. Sel. Evol. 27, 195-199, 1995). A Chr 15 map was established with 16 markers . The RN gene was found to be located between markers Sw120 and Sw936, at 2 cM from Sw936 (LOD = 38.1). In addition, by localizing Sw936 at 15q21-22 using DISC-PCR, we also located RN on the physical map.