A. V. Tkachev
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy; Peoples’ Friendship University of Russia
Russian Federation

Aleksandr V. Tkachev, DSc (Agr), Senior Research Associate, Professor at the Department of Veterinary Medicine; Associate Professor of the Department
of Veterinary Medicine, Agrarian and Technological Institute

49 Timiryazevskaya St., Moscow, 127434;

6, Miklukho-Maklaya Str., Moscow, 117198

O. L. Tkacheva
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation

Olga L. Tkacheva, CSc (Agr), lecturer, Technological College

49 Timiryazevskaya St., Moscow, 127434

A. V. Petryaeva
Peoples’ Friendship University of Russia
Russian Federation

Alina V. Petryaeva, additional education teacher at the Department of General Education Disciplines

6 Miklukho-Maklaya St., Moscow, 117198