1. Laboratory of Physiology School of Veterinary Medicine Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
2. Department of Veterinary Medicine and Animal production Federico II University Naples Italia
3. Department of Artificial Insemination Directorate of Veterinary Centre of Thessaloniki National Ministry of Rural Development and Food Nea Ionia Greece
4. Laboratory of Safety and Quality of Dairy Foods School of Veterinary Medicine Faculty of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece