The influence of two- or three-breed crossing of young animals of different sexes and directions of productivity on the intake and use of dietary nutrients

The aim of the study was to effect crossing dairy cows with bulls different genotypes on intake and use dietary nutrients. It has been established that leading position in consumption all types nutrients occupied by three-breed Simmental crossbreeds, which is due their higher body weight greater feed. At same time, were characterized largest nutrients, heifers — bythe smallest, castrated an intermediate position. As a result studies, it found efficiency digestibility individual diet experimental subjects significantly influenced genetic factor. proven two- or Black-and-White affects increase ration