Affiliation: | 1. Department of Animal Science and Animal Husbandry, Georgikon Faculty, University of Pannonia, Keszthely, Hungary;2. Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, Austria;3. Department of Animal Hygiene, Poultry and Environment, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt |