[1] Univ Vet Med Vienna, Inst Anim Breeding & Genet, A-1210 Vienna, Austria
[2] Museum Nat Hist, Cent Res Labs, A-1010 Vienna, Austria
[3] Univ Vienna, Dept Evolutionary Biol, A-1090 Vienna, Austria
[4] Univ Hohenheim, Inst Anim Sci, D-70599 Stuttgart, Germany
[5] Agr Univ Krakow, Dept Anim Reprod Anat & Genom, Al Mickiewicza 24-28, PL-30059 Krakow, Poland
[6] Natl Res Inst Anim Prod, Dept Anim Mol Biol, Krakowska 1, PL-32083 Balice, Poland
[7] Univ Calif Davis, Sch Vet Med, Vet Genet Lab, Davis, CA 95616 USA
[8] Univ Calif Davis, Sch Vet Med, Populat Hlth & Reprod, Davis, CA 95616 USA