The article presents the composition of known feed additives. The combination of components used in the feed additive can solve the problem of vitamin and energy deficiency, normalize metabolism, remove toxic products accumulated in the gastrointestinal tract, increase the resistance of young animals and adult animals, and avoid losses of dairy and meat productivity. Common disadvantages of feed additives are their multicomponent composition, high labor intensity and duration of production. (Research purpose) The research purpose is in developing the technologies for the production of feed additives with a wide range of biological activity based on the processing of oxidized brown coal on a modular production line. (Materials and methods) The article presents the study of the efficiency of a modular processing line to provide flexibility in the technology of processing brown coal to obtain feed additives. The article presents the practical results of checking the quality of the obtained feed additive on the parameters and operating modes of individual units and aggregates. (Results and discussion) Authors developed a technology for the production of feed additives for cattle. The proposed feed additive was tested in Andreevskoe LLC of the Republic of Khakassia on a dairy herd of cattle, where two groups of animals of 20 heads each were formed: a control group and an experimental group. Authors tested the addition at the end of the winter stall period. (Conclusions) The article presents the influence of the “Humates of Khakassia” feed additive on the dairy and meat productivity of cattle on the example of LLC «Andreevskoe». Authors optimized the feeding standards and the composition of feed additives for dairy cattle in the Republic of Khakassia. The article presents developed recommendations for the use of feed additives in the stable period.
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