Authors
M. Vasiľ
Department of Animal Husbandry
L. Takáč
Department of the Environment, Veterinary Legislation and Economics University of Veterinary Medicine and Pharmacy, Košice, Slovakia
M. Zigová
Department of Pharmacology, Faculty of Medicine,, Pavol Jozef Šafárik University, Košice, Slovakia
J. Elečko
Department of Animal Husbandry
