1. Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine Cairo University Giza Egypt
2. Department of Pathology, Faculty of Veterinary Medicine Cairo University Giza Egypt
3. Department of Animal and Rangeland Sciences Oregon State University Corvallis Oregon USA
4. Animal Production Department National Research Centre Giza Egypt
5. Department of Food Hygiene and Control, Faculty of Veterinary Medicine Cairo University Giza Egypt
6. Genetics and Genetic Engineering Department, Faculty of Agriculture Benha University Qalyubia Egypt
7. Department of Animal Production, Faculty of Agriculture at Moshtohor Benha University Qalyubia Egypt
8. Department of Physiology National Organization for Drug Control and Research Giza Egypt