Use of phytobiotics in animal husbandry and poultry Vladimir Pashtetsky, Pavel Ostapchuk, Tatiana Kuevda, Denis Zubochenko, Sergey Yemelianov and Veronika Uppe E3S Web of Conf., 215 (2020) 02002 Published online: 02 December 2020 DOI: 10.1051/e3sconf/202021502002