1. Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Al-Qassim, Saudi Arabia;
2. Department of Poultry Production, Faculty of Agriculture, Ain Shams University, Cairo, Egypt;
3. Department of Poultry Production, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh, Egypt;
4. King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia