Department of Animal Protection and Welfare & Veterinary Public Health, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Palackeho Tr. 1946/1, 612 42, Brno, Czech Republic; Department of Plant Origin Food Sciences, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Palackeho Tr. 1946/1, 612 42, Brno, Czech Republic.