Radchikov, V. F., Tzai, V. P., Kot, A. N., Sapsaleva, T. L., Besarab, G. V., Gutyj, B. V., Karpovskyi, V. I., & Trokoz, V. O. (2021). Natural biologically active additive in feeding calves. Ukrainian Journal of Veterinary and Agricultural Sciences, 4(3), 28-32. https://doi.org/10.32718/ujvas4-3.05