The article discusses the effectiveness of calf rearing in lightweight buildings in individual cages and in houses for individual keeping from 3 days of his life to 60 days of age. It has shown the advantage of growing young animals using this technology in comparison with the traditional method for group keeping indoors. This method of calf breeding contributes to maintaining the cultivation of full-fledged repair young animals, and ultimately, increasing the efficiency of animal husbandry. Since all experimental groups had a different content system, the dynamics of live weight in age periods helped to reveal the difference in growth rates and developed animals. The data obtained indicate that the weight during the formulation did not differ much in animals of the control I and II of the experimental groups was 36 kg, respectively, 35.7 and 38 kg. At 3 months of age, it amounted to 83, 87.6 and 90.2 kg, respectively. They exceeded their peers in the control group 7.2 kg or 7.99%, 4.6 kg 4.67%, respectively. The average daily increase in 3 months was 626 g, 692 g, 696 g, respectively.

The sectional design of a flat shutter with an electric drive has lower energy characteristics and improved operational and technological indicators compared to the existing ones for hydraulic structures and channels. The use of linear asynchronous electric motors in linear electric drives allows to simplify the design and reduce material consumption. Modeling of linear induction motors with various designs of the secondary element is carried out on the basis of detailed equivalent circuits for electric and magnetic circuits. Coating a massive or serrated secondary element with a layer of non-magnetic material can increase the traction performance of a linear motor. Comparison of the results of numerical modeling and physical experiments of linear induction motors with various secondary element designs for a sectional flat shutter is the most effective shielded ferromagnetic secondary element.

This article discusses feed distribution control using a linear electric drive for small cattle farms. Electrification feeders are difficult complex units which in addition to the dispenser, they are equipped with working bodies that perform various technological functions. Given the above, we can conclude that this type of farm use a lot electro energy to low this effect we need use automation systems to electro mechanic units. In this article given results of experimental work in using of liner motor drives in cattle farms and mathematic explanation of electro safety according to proposed technology.

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