For citations:
Nechitailo K.S., Sizova E.A., Ryazantseva K.V., Kvan O.V. The effect of an enzyme additive in combination with zinc in an ultrafine form on the productive performance of broiler chickens. International Journal of Veterinary Medicine. 2023;(4):197-205. (In Russ.) https://doi.org/10.52419/issn2072-2419.2023.4.197