Authors
Trakia University, Faculty of Veterinary Medicine, Department of Animal Husbandry, Bulgaria
Trakia University, Faculty of Veterinary Medicine, Department of Pharmacology, Physiology of the Animals and Physiological Chemistry, Bulgaria
Istanbul University, Faculty of Aquatic Science, Department of Aquaculture and Fish Diseases, Istanbul, Turkey
Trakia University, Faculty of Agriculture, Department of Biology and Aquaculutre, Bulgaria