RubtsovI. О., Popsui, V. V., Korzh, O. O., & OparaV. О. (2023). THE INFLUENCE OF GENETIC UNITS ON THE INDICATORS OF GROWTH AND FORMATION OF EXCRERIER IN HEIFFS OF THE UKRAINIAN BLACK-SPOTTED DAIRY BREED. Bulletin of Sumy National Agrarian University. The Series: Livestock, (2), 45-50. https://doi.org/10.32782/bsnau.lvst.2023.2.7