Authors
Manol Karadaev
Department of Obstetrics, Reproduction and Reproductive Disorders, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
Ivan Fasulkov
Department of Obstetrics, Reproduction and Reproductive Disorders, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
Radina Vasileva
Student of Veterinary Medicine, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
Nasko Vasilev
Department of Obstetrics, Reproduction and Reproductive Disorders, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria