INFLUENCE OF FEEDING TYPE IN DAIRY PERIOD ON THE FURTHER GROWTH AND DEVELOPMENT OF CALVES UNDER INTENSIVE CULTIVATION

Abstract

The research was carried out in the conditions of the farm of FGUP RPZ "Krasnoarmeysky" named after A. I. Maistrenko of the Krasnoarmeysky district of the Krasnodar territory. The aim of the research was to develop elements of technology of intensive beef production when raising dairy bulls up to 12 months of age with the inclusion of starter feed in the diet and drinking different amounts of dairy feed in the first 5 months of life. For the experiment, black-andwhite bulls were selected from the age of 4 days, divided into 2 groups of 12 heads each. Bulls, which in the first five-month period of life replaced half of the dairy feed with starter feed and other feeds, showed increased growth and development of the gastrointestinal tract and other organs in the subsequent 6-12 month period of cultivation and fattening, they had an increased energy of average daily growth of 1142.8 g, surpassing the animals of the 1st group. In the first 5-month period of growing, the limited replacement of part of the dairy feed with mixed feed starter, abstinence with the supply of coarse feed in the first two months of life had a positive effect on the development of the gastrointestinal tract, heart, lungs, tongue and head, as well as the intensity of growth, compared to analogues that received milk and hay. After the milk period of 6-12 months of growth and development, the positive effect of pre-enhanced development of organs (including the pre-ventricles) continued. Differences in the growing of calves in the first 5 months had an impact on the histological state of the tissues of the scar, mesh and abomasum, which also affected the differences in the growth rate of calves-analogues.