ФИО: 
Ovchinnikov Dmitry Dmitrievich
About author: 

Master, the Department of Farm Animal Breeding, Private Zootechnics and Zoological Hygiene named after Academician P. E. Ladan.
the Federal State Budgetary Educational Institution of Higher Education the Don State Agrarian University

e-mail: 
ovchinnikoff.dmitrij2014@yandex.ru

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