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An important task for livestock farms is the use of plant feed extracts to improve the effectiveness of dairy production. The development of new alternative drugs based on natural plants allows for the biological protection of animals. Agolin Ruminant is multi-functional feed additive is a mixture of high-quality active ingredients of plant origin, which is designed to optimize consumption and improve feed conversion in the dairy industry. The purpose of the work was to find the increase in the productivity of high-yield cows by using feed additives based on plant extracts on a large number of animals. Production tests have been carried out in the dairy complex of LLC “Tambov-milk” in the Tambov region on Holstein cows with actual productivity at the level of 8500–9000 kg of milk per year. Analysis of cow productivity indicates a positive effect of the introduction of the feed additive Agolin Ruminant in the ration of animals. For example, in the control group of cows for 30 days of lactation the average daily milk yield from 1 cow was 27,44 kg, in the experimental group 28,14 kg, which was more than 700 g or 2,55 %. The introduction of the Agolin Ruminant feed additive into the ration of animals in the experimental group had a positive effect on the fat content in milk, which at the end of the research period was 3,69 % in the control group, and 3,71 % in the experimental group or 0,02 abs.% higher. The protein content in milk in the control group of cows was 3,16 %, and in the experimental group 3,18 % the excess was also equal to 0,02 abs.%. Economic calculations indicate the effectiveness and expediency of using the Agolin Ruminant feed additive in feeding highly productive cows. At the sale price of 1 kg of milk for 29,0 rubles the productivity of cows have been increased by 0,7 kg, and the income from 1 head per day has increased by 17,3 rubles minus the cost of feed additive.

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Задача повышения экономической эффективности кормления крупного рогатого скота, получения здоровых животных с высокой продуктивностью может быть решена введением в рацион кормления биологически активной добавки. Исследована технология кормления молодняка крупного рогатого скота с использованием отечественной кормовой добавки на основе микроэлементов в виде гидроксид полимальтозных и хелатных комплексов. В состав добавки входят медь, кобальт, селен, йод, марганец в виде амминоатов, цинк в хелатной форме глюконата, а также гидролизат растительного белка. Были сформированы две группы телят по 15 голов в соответствии с требованиями по подбору аналогов опытная и контрольная. Животным опытной группы в молоко вводили биодобавку (по 1 мл/кг живой массы), количество которой корректировалось в зависимости от изменения живой массы. При формировании групп живая масса подопытных телят была практически одинаковой. Но уже в месячном возрасте телята опытной группы по этому показателю превосходили контрольных на 1,5 кг, а в 2месячном возрасте на 4,1 кг, или на 5,3. Животные в опытной группе болели на 13 меньше по сравнению с контрольными. В целом за период исследования опытные телята превосходили контрольных по валовому приросту на 8,11. Установлено, что технология кормления молодняка крупного рогатого скота на основе оптимизации рационов с применением отечественной кормовой добавки, обладающей высокими биологическими свойствами, изготовленной из недорогих видов сырья, позволила обеспечить высокую интенсивность роста телят.The task of increasing the economic efficiency of feeding cattle, obtaining healthy animals with high productivity can be solved by introducing a biologically active supplement in the diet. The technology of feeding young cattle with the use of domestic feed additive based on microelements in the form of hydroxides of polymaltose and chelate complexes is studied. The composition of the additive includes copper, cobalt, selenium, iodine, manganese in the form of amino acids, zinc in the chelate form of gluconate as well as a gluten hydrolysate. Two groups of calves of 15 goals were formed in accordance with the requirements for the selection of analogues experimental and control ones. Dietary supplement (1 ml/kg of live weight) was introduced into milk of the experimental group animals the amount of which was adjusted depending on changes in live weight. During the formation of the groups the live weight of the experimental calves was practically the same. But already at the age of one month the calves of the experimental group exceeded the control one by 1.5 kg by this indicator and at 2 months of age by 4.1 kg or 5.3. Animals in the experimental group were 13 less sick compared to control ones. In general during the research period experimental calves exceeded the control ones in terms of gross gain by 8.11.It was established that the technology of feeding young cattle based on optimization of diets with the use of domestic feed additives with high biological properties made from inexpensive types of raw materials made it possible to ensure high growth rate of calves.