Rubtsov , I. (2021) “Comparative assessment of heifers of Ukrainian Black-and-White and Red-and-White dairy breeds by growth, measurements and live weight gain in Chernihiv region”, Bulletin of Sumy National Agrarian University. The series: Livestock, (1(44), pp. 80-85. doi: 10.32845/bsnau.lvst.2021.1.11.