Khomenko, M.O., Seba, M.V. and Bondarenko, V.V. 2022. DYNAMICS OF BIOCHEMICAL AND HORMONAL CHANGES IN THE BLOOD OF PREGNANT AND NON-PREGNANT COWS AFTER THE APPLICATION OF BIOLOGICALLY ACTIVE SUBSTANCES. Bulletin of Sumy National Agrarian University. The series: Livestock. 1 (Jul. 2022), 86-91. DOI:https://doi.org/10.32845/bsnau.lvst.2022.1.13.