For citations:
Kuzmenkova A.V., Denisyuk E.A., Ginoyan R.V., Dmitrieva N.Y. Influence of fulvic acid in feed additives on protein change and dairy productivity of cows. Proceedings of the Voronezh State University of Engineering Technologies. 2021;83(2):121-125. (In Russ.) https://doi.org/10.20914/2310-1202-2021-2-121-125