Department of Animal Breeding and Genetics, Danish Institute of Agricultural Sciences, Research Center Foulum, DK-8830 Tjele, Denmark. henrikh.jensen@agrsci.dk|Department of Animal Breeding and Genetics, Danish Institute of Agricultural Sciences, Research Center Foulum, DK-8830 Tjele, Denmark. henrikh.jensen@agrsci.dk|Department of Animal Breeding and Genetics, Danish Institute of Agricultural Sciences, Research Center Foulum, DK-8830 Tjele, Denmark. henrikh.jensen@agrsci.dk|Department of Animal Breeding and Genetics, Danish Institute of Agricultural Sciences, Research Center Foulum, DK-8830 Tjele, Denmark. henrikh.jensen@agrsci.dk