1. Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
2. Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
3. Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
4. Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
5. Department of Public Health, College of Veterinary Medicine, King Faisal University, Al-Ahsa, Saudi Arabia
6. Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt