Can roosters′ head ornaments serve as a criterion for their selection as a valuable reproducers?
Łukaszewicz, Ewa, Bagińska, Paulina, Lasoń, Martyna
Freezability of Semen Collected from Ganders of 12 Breeds Covered by the Polish Genetic Resources Conservation Program
Łukaszewicz, Ewa, Kowalczyk, Artur, Jerysz, Anna, Lisowski, Mirosław