New QTL's on chromosomes X, 2, 6 and 7 of pigs

摘要

The invention relates to the field of breeding domestic animals, in particular pigs. The invention provides an isolated and/or recombinant nucleic acid comprising a sequence affecting the quantitative trait muscle depth in mammals, said sequence being derived from a locus corresponding to region HSA6p21.3-p.22 in humans and corresponding to the homologous region on ssc7 in pigs, in particular wherein said quantitative trait is maternally expressed. Also, the invention provides an isolated and/or recombinant nucleic acid comprising a sequence affecting the quantitative trait back fat thickness in mammals, said sequence being derived from a locus corresponding to a region on ssc7 in pigs, which region overlaps with the region identified in claim 1 affecting the quantative trait muscle depth on ssc 7 in pigs, and an isolated and/or recombinant nucleic acid comprising a sequence affecting the quantitative trait back fat thickness in mammals, said sequence being derived from a locus corresponding to a region on ssc2 of pigs which maps about 35 cM away from the IGF2 region, in particular wherein said quantitative trait is paternally expressed.