World experience shows that family farms are the basis for the agricultural sector of countries with advanced market economies. The analysis of the components of the livestock ration provided an opportunity to identify the amount of feed mixture, which needs to be distributed to animals per day, depending on the livestock. Researches have shown that for preparation and distribution of feed on farms with livestock up to 10 cattles, it is advisable to use inefficient machinery with energy drive and partial execution of manual operations, 11-35 -self-feeders, mechanized lines using stationary machinery with energy drive and forklifts. For 36-50 cattles of livestock and at an average animal productivity of at least 6500 kg of milk per year, processes of preparation and distribution of feed can provide self-feeding and mobile combined feed making machines. Preparation and distribution of feed mixes for 51-400 heads of cattle -provide mobile combined feed making machines with delivery of the mixture on the feed tables. For livestock with more than 400 heads of cattles, it is advisable to use stationary robotic feed making facilities and distributors of feed mixtures or a mobile combined feed making machine. In the feed mixture preparation process, it was found that the multifunctional feed making machines with a vertically positioned conical auger in the hopper have a high power consumption of more than 35 kW. Power consumption, driven by the working bodies, is almost directly proportional to the speed of an auger. With increasing rotation frequency of an auger, the efficiency of grinding and mixing does not increase significantly; we have substantiated the rotation frequency of an auger 16-20 min -1 , with grinding rolls and packs and in the mode of mixing and dispensing 24-25 min -1 . However, in the process of dispensing the feed mixture, the existing auger does not clean itself from the feed.

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As a result of energy assessment of a pneumatic sieve separator for agricultural crops it was determined that the specific energy consumption of the experimental pneumatic sieve separator was 0.18 kW·year·t−1. It is lower than in case of its domestic and foreign equivalents. For instance, the specific energy consumption of the separator of preliminary grain purification called SPO-50 (Ukraine) is 0.31 kW·year·t−1, and that of the machine of preliminary grain purification called MPO-50 (Russia) is 0.38 kW·year·t−1. Specific energy consumption of a pneumatic sieve separator is 1.72-2.11 times lower than in case of its domestic and foreign counterparts.

The results of the study of the fodder preparation quality by the combined feeding unit that provides simultaneous grinding and mixing the components with the following dosed distribution to the cattle are given. The method of assessing uniformity of feed mixing for the distribution of moisture was tested. Hypothesis of the method for assessing uniformity of fodder mixtures and without making any selection control component is based on the redistribution of moisture feed components to each other in the process of mixing. The production tested method of assessing of the mixture quality was conducted during the preparation of feed for cattle by a mobile fodder preparation combined unit, which provided simultaneous grinding and mixing of the components with the following dosed distribution of them into the troughs or on the feed tables. Dosage of the starting components, when loading them into the hopper, was performed by using of the weighted mobile fodder preparation combined unit. Moisture content of feed ingredients and feed mixtures was determined by the moisture tester VLK-01, a grain moisture tester also can be used (similar Wile-55, Finland). Indicators of the evaluation of the mixing quality according to the method of moisture distribution were compared with the results of no uniformity mixing, defined by the standard method, which involves the addition of a control component (sugar beet seeds) in the amount of 1 % relative to the weight of the feed mixture. After downloading of the latest component into the feed hopper unit, the minimum acceptable requirements of livestock uniform mixing (85 %) is provided by stirring for 6-8 minutes. Indicators of the assessment of mixing by the method of moisture distribution and control component practically coincided during the time of feed processing.

Phase composition and microstructure of the doping alloy obtained by regenerative smelting of technogenic wastes were studied. This is necessary to determine technological characteristics that increase the degree of extraction of doping elements during the processing of technogenic raw materials and subsequent use of the alloying material. It was determined that at a Si:C atomic ratio in the charge at a level of 0.05-0.19 (O:C atomic ratio is 1.25), a solid solution of carbon and doping elements in γ-Fe, Fe 3 Si, and Fe 5 Si 3 was found in the alloy. At Si:C atomic ratio at a level of 0.05 in the alloy, a solid solution of carbon and alloying elements in γ-Fe was dominating with a weak manifestation of Fe 3 Si. When the value of Si:C atomic ratio was increased to 0.09, Fe 5 Si 3 was found together with Fe 3 Si. A gradual increase in Si:C atomic ratio to 0.09, 0.12, and 0.19 led to a higher manifestation of Fe 3 Si and Fe 5 Si 3. The microstructure of the alloy in the entire studied range of Si:C ratio values in the charge was characterized by the presence of several phases with different contents of doping elements. The content of elements in the studied areas (at. %) was 1