Bwnd5wk4|Bwnd4wk3|Bwnd6wk3|Bwnd2wk4 Bwnd4wk3 QTL http://identifiers.org/mgd/MGI:3723096 QTL Mtgq3 syntenic Bwnd6wk3 MGI:3723096 Bwnd5wk4 Bwnd2wk4 multiple trait growth QTL 3 O