1. Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine Damanhour University Damanhour Egypt
2. University of Jeddah, College of Science Department of Biology Jeddah Saudi Arabia
3. Department of Histology and Cytology, Faculty of Veterinary Medicine Damanhour University Damanhour Egypt
4. Department of Physiology, Faculty of Veterinary Medicine Kafrelsheikh University Kafrelsheikh Egypt
5. Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine Alexandria University Behira, Rasheed, Edfina Egypt
6. Poultry Department, Faculty of Agriculture Zagazig University Zagazig Egypt
7. Department of DETO, Section of Veterinary Science and Animal Production University of Bari ‘Aldo Moro’ Valenzano Italy