The aim of the study was to study the effect of crossing dairy cows with bulls of different genotypes on the intake and use of dietary nutrients. It has been established that the leading position in the consumption of all types of nutrients was occupied by three-breed Simmental crossbreeds, which is due to their higher body weight and greater consumption of all types of feed. At the same time, bulls of all genotypes were characterized by the largest intake of nutrients, heifers — bythe smallest, castrated bulls occupied an intermediate position. As a result of the studies, it was found that the efficiency of the digestibility of individual nutrients in the diet of experimental subjects is significantly influenced by the genetic factor. It has been proven that two- or three-breed crossing of Black-and-White cows affects the increase in the efficiency of the use of nutrients in the ration feed.
No takes yet. Share an insight, caveat, or question.
Nikonova et al. (2022) studied this question.