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METABOLISM AND PRODUCTIVITY OF CALVES WHEN FEEDING DIFFERENT DAIRY PRODUCTS

Until recently, farms traditionally fed calves with dairy feed for 4 months, but the preweaning period can be reduced to 2-3 months. The main criterion for this is physiological development of calves and their ability to consume vegetable feed in the required quantities. The aim of the research was to develop the calf rearing system with the most effective duration of the preweaning period, ensuring the normal course of digestion processes and animal productivity. For this purpose, whole milk and dried skim milk replacers were developed. It was found that their inclusion in the diet instead of whole milk contributed to the strengthening of metabolic processes in the animals of experimental groups compared with the control counterparts. The use of dried skim milk and whole milk replacers when raising young animals during the preweaning period of 115 days reduced the cost of the diet by 10.3% and 5.8% and the cost of gain by 8.5% and 4.8%.