D. A. Nikitin
Chuvash State Agrarian University
Russian Federation

Dmitry Anatolyevich Nikitin, Doctor of Veterinary Sciences, Docent, Professor of the Department of Morphology, Obstetrics and Therapy

29 Karl Marx Str., Cheboksary, 428003

V. G. Semenov
Chuvash State Agrarian University
Russian Federation

Vladimir Grigoryevich Semenov, Doctor of Biological Science, Professor, Head of the Department  of Morphology, Obstetrics and Therapy 

29 Karl Marx Str., Cheboksary, 428003

N. I. Kosyaev
Chuvash State Agrarian University
Russian Federation

Nikolay Ivanovich Kosyaev, Doctor of Veterinary Sciences, Professor of the Department of Epizootology, Parasitology and Veterinary and Sanitary Expertise

29 Karl Marx Str., Cheboksary, 428003

A. A. Yuldashev
Astrakhan State Technical University is a branch in the Tashkent region of the Republic of Uzbekistan
Uzbekistan

Alo Askarovich Yuldashev, PhD in Agricultural Sciences, Associate Professor of the Department of Aquatic Bioresources and Aquaculture

2 Universitetskaya Str., Salar, 100164

A. A. Kasyanov
Chuvash State Agrarian University
Russian Federation

Andrey Aleksandrovich Kasyanov, Postgraduate Student of the Department of Morphology, Obstetrics and Therapy 

29 Karl Marx Str., Cheboksary, 428003