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The article provides an analysis of existing feeding technologies on dairy farms, which are divided into four types and evaluated by the accuracy of dosing concentrated and bulky feeds into a mixer. In the first type of feeding, the feed is prepared by a trailer mixer-distributor, where each component is dosed by a loader, the accuracy of the feed dosage was measured by the onboard weighing system "Dailly TMR Manager". The second type involves the use of a self-propelled feed dispenser mixer with self-loading. The third feeding scheme in a stationary feed mill provides for the use of a stationary mixer-distributor of feed and automated distribution means (a wheeled robot or a feed wagon). The fourth type of feeding technology is presented in the form of a self-propelled chassis, on which the feed mixer capacity and an autonomous dosing system of concentrated feeds for different age and gender technological groups are installed. The high dosage error of concentrated feeds was shown by the first feeding technology, the maximum recorded value of 17 % out of 100 measurements. When dosing bulky feeds, the first and fourth feeding technologies showed a high error of up to 6 %. The technology of feeding in a stationary feed mill has a high accuracy of dosing of all types of feed, but the main disadvantages of this technology are high metal consumption, energy consumption and bulkiness of the structure, which increases the cost of equipment and its maintenance. The specific gravity of concentrates in the feeding diet requires the use of high-precision dosing equipment, eliminating dosage errors associated with the human factor. An overdose of concentrated grains increases the cost of milk, increases the risk of acidosis, and a lack reduces the efficiency of animal nutrient metabolism. Based on the above analysis of existing technologies, a feeding technology is proposed using a self-propelled mixer distributor with an automatic weight control system and a self-loading device for bulky feeds, and for concentrated feeds – a robotic device equipped with an accurate dispenser of concentrated feeds and mineral additives with a maximum error of 2 %.

The article presents the results of the economic and bioenergetic assessment of winter barley cultivation methods for harvesting bulky fodder. In a short-term experiment the effect of five levels of mineral nutrition on two methods of tillage in the crop rotation link soybean – winter barley, on fused leached chernozems of the southern foothill zone of Adygea has been studied. Differentdepth methods of tillage have been used for 20–22 cm (plowing) and 12–16 cm (surface tillage). As a background on the variants, the main fertilizer ammophos and ammonium nitrate have been used as top dressings (N30; N45; N60). It has been revealed that the use of surface treatment reduces the yield of winter barley green mass by 21-41%. The average yield varied from 8.8 for surface tillage to 12.8 t/ha for plowing. The highest level of productivity is 19.2 for plowing and 12.0 t/ha for surface treatment. It has been revealed that the green mass of the studied varieties of winter barley in 1 kg of natural feed contains, on average, from 0.42 to 0.605 EFU (energy feed units). Analysis of the nutritional value of the obtained green mass has shown: in 1 kg of dry matter of feed for plowing: crude protein 10.1%, exchange energy 11.72 MJ, feed units (Ke) 1.12; for surface treatment – 8.8%, 11.72 MJ, 1.13 (Ke). The highest yield has been formed according to the cultivation method, with the introduction of 60 kg of a.i. N by background (N24 P104) – by plowing. The most profitable plowing option is: Background + N60 (Romans variety), with a yield of 19.2 t / ha, the profit from the sale is 10603.8 thousand rubles, the profitability level is 58.3%. Bioenergetic assessment of cultivation methods has shown that for each unit of energy invested in the production of winter barley green mass, on the best options, from 2.75 to 2.92 units of energy have been obtained.