1. Arid Land Agriculture Department, Faculty of Meteorology, Environment and Arid Land Agriculture King Abdulaziz University Jeddah Saudi Arabia
2. Department of Veterinary Medicine and Animal Production University of Napoli Federico II Napoli Italy
3. Department of Animal and Poultry Production, Faculty of Agriculture Damanhour University Damanhour Egypt
4. Animal Husbandry and Animal Health Development, Faculty of Veterinary Medicine Alexandria University Alexandria Egypt