Comparative characteristics of feeding natural mineral supplements to lactating cows from different deposits

Relevance. The article presents data on the effect of feeding lactating cows with different doses of natural mineral additives “Stimul” and smectite trepel as part of the feed mixture at the same concentration of metabolic energy in the diets, their effect on increasing milk yield, the amount of milk fat and protein in both the first and second experiments, their impact on increasing profitability and reducing the cost of exchange energy per 1 kg of milk. Methods. The effect of the inclusion of mineral additives “Stimul” and smectite trepel in the diet of lactating cows in 3.0% and 4.0% concentrations was studied, the composition of which includes about 40 mineral elements in an accessible form for the body, for the realization of the bioresource potential of the productivity of animals with a live weight of 400–450 kg in the conditions of the farm of ООО “Molochnoye”, Trubchevsky district of the Bryansk region. Before feeding, the mineral is subjected to high-temperature activation, grinding and separation into fractions. Crushing and dividing into fractions mineral additives from different deposits facilitate their use in feeding lactating cows. Results. The results of the research showed, that mineral supplements of different deposits in the diets of lactating cows have a stimulating effect on the mineral metabolism in the body of animals, and are consistent with the data of other authors. The analysis of the results of a comparative study of the productive qualities of cows for the experiment showed, that the inclusion of natural mineral supplements in the diet of lactating cows is cost-effective. The level of profitability when using the mineral additive smektitny trepel in the amount of 3.0% and 4.0% was higher by 5.3% and 18.6%then the mineral additive “Stimul”.