R.G. Karimova - Dr. Sc. (Biol.), Professor, Bauman Kazan State Academy of Veterinary Medicine. E-mail: Rufiya77@yandex.ru
G.A. Morozov - Dr. Sc. (Eng.), Professor, Kazan State Technical University named after A.N. Tupolev
T.V. Garipov - Dr. Sc. (Veterinary), Bauman Kazan State Academy of Veterinary Medicine. E-mail: Garipovtv@yandex.ru