1. a Laboratory of Hygiene of Foods of Animal Origin, Faculty of Veterinary Medicine , University of Thessaly , 43100 Karditsa
2. b Laboratory of Milk Hygiene and Technology, Faculty of Veterinary Medicine , Aristotle University , 54124 Thessaloniki
3. c Laboratory of Animal Nutrition, Faculty of Veterinary Medicine , Aristotle University , 54124 Thessaloniki , Greece