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Kropyvka, Y.G., Bomko, V.S. and Babenko, S.P. 2020. FEED CONSUMPTION, REPRODUCTIVE FUNCTIONS, RUMEN METABOLISM, DIGESTIVENESS AND NITROGEN BALANCE IN HIGHLY PRODUCTIVE COWS IN THE SECOND PERIOD OF LACTATION FOR THE FERTILIZATION OF MIXED- LIGAND ZINC, MANGANESE AND COBALT COMPLEXES. Scientific and Technical Bulletin оf State Scientific Research Control Institute of Veterinary Medical Products and Fodder Additives аnd Institute of Animal Biology. 21, 2 (Oct. 2020), 76-85. DOI:https://doi.org/10.36359/scivp.2020-21-2.10.