Pidpala , T., Strikha , L., Strikha , L. and Zaycev , I. 2021. Features of regression dependence of signs in cows of holstein breed of different selection. Bulletin of Sumy National Agrarian University. The series: Livestock. 2 (45) (May 2021), 121-126. DOI:https://doi.org/10.32845/bsnau.lvst.2021.2.18.