@article{Kropyvka_Bomko_Kropyvka_2021, title={The economic efficiency of the use of mixed ligand complexes of Zinc, Manganese and Cobalt in the rations of highlyproductive cows of the Ukrain-ian Red-Spotted Dairy breed}, volume={23}, url={https://nvlvet.com.ua/index.php/agriculture/article/view/4246}, DOI={10.32718/nvlvet-a9512}, number={95}, journal={Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Agricultural sciences}, author={Kropyvka, Yu. and Bomko, V. and Kropyvka, S.}, year={2021}, month={Dec.}, pages={82-86}