1. Department of Bird and Rabbit Diseases, Faculty of Veterinary Medicine, Menoufia University, Shebeen Elkom 32511, Egypt
2. Department of Bird and Rabbit Diseases, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
3. Department of Poultry and Fish Diseases, Faculty of Veterinary Medicine, Alexandria University, Alexandria 21944, Egypt