[1] Inst Anim Sci, Dept Genet & Breeding Farm Anim, Pratelstvi 815, Prague 10401, Czech Republic
[2] Czech Univ Life Sci, Dept Genet, Kamycka 129, Prague 16506, Czech Republic
[3] Charles Univ Prague, Dept Genet & Microbiol, Fac Sci, Vinicna 7, Prague 12843, Czech Republic
[4] Breeding Co CHD Impuls, Bohdalec 59255, Czech Republic