Authors
Dimitrinka Zapryanova
Trakia University, Faculty of Veterinary Medicine, Bulgaria
Radoslav Simeonov
Trakia University, Faculty of Veterinary Medicine, Bulgaria
Alexander Atanasoff
Trakia University, Faculty of Veterinary Medicine, Bulgaria
Galin Nikolov
Trakia University, Faculty of Agriculture, Bulgaria
Gergana Sandeva
Trakia University, Faculty of Medicine, Bulgaria