1. Arid Land Agriculture Department; Faculty of Meteorology; Environment and Arid Land Agriculture; King Abdulaziz University; Jeddah Saudi Arabia
2. Department of Animal and Poultry Production; Faculty of Agriculture; Damanhour University; Damanhour Egypt
3. Animal Production Research Institute; ARC. Ministry of Agriculture; Giza Egypt
4. Department of Veterinary Medicine and Animal Science; University of Napoli Federico II; Napoli Italy