Yu. I. Simonov
Bryansk State Agrarian University
Russian Federation

Candidate of Veterinary Sciences, Head of the Department of Therapy, Surgery, Veterinary Obstetrics and Pharmacology

V. V. Chernenok
Bryansk State Agrarian University
Russian Federation

Candidate of Veterinary Sciences, head of the department of epizootology, microbiology, parasitology and veterinary sanitary inspection

L. N. Simonova
Bryansk State Agrarian University
Russian Federation

Candidate of Veterinary Sciences, Associate Professor of the Department of Therapy, Surgery, Veterinary Obstetrics and Pharmacology

Yu. N. Chernenok
Bryansk State Agrarian University
Russian Federation

Candidate of biological Sciences, associate professor of the department of normal and pathological morphology and physiology of animals

B. S. Semenov
Saint Petersburg State University of Veterinary Medicine.
Russian Federation

doctor veterinary sciences, professor of the department of general, special and operative
surgery