The article discusses the factors affecting the reduction of the energy consumption of feed chopping and the justification of the feed chopper parameters. There is a design and principle of operation of the laboratory setup presented and described. A corn cob chopper with improved chopping quality reduces energy consumption, lowers operating costs and improves feed digestibility.

Increasing the economic efficiency of machine milking is possible by using high-performance, partially and (or) fully automated milking units using advanced milking technologies. When milking animals with traditional milking machines, turning off the milking cups occurs simultaneously, without taking into account the uneven development of the udder quarters, this can eventually lead to dry milking of the udder quarters, which is fraught with consequences. To substantiate this issue, an analysis was made of the work of DeLaval milking robot in Timershik farm of Saba LLC in the Sabinsky district of the Republic of Tatarstan. The results of the study of uneven development of cow udder shares based on the processing of the data obtained showed that a large number of animals in the herd have uneven development of udder quarters, but they are superior in productivity to other cows and culling of these animals due to uneven development of udder quarters is excluded. In this connection, the method proposed by Safiullin N.A. for assessing the uniformity of development of udder quarters is considered, which consists in the following: after determining the number of milk yields by quarters, the coefficient of variation is calculated and the indicators of uniformity of development of quarters are calculated. In our opinion, this method of analysis is more effective. We also analyzed the milk yield curves for udder quarters and proposed a scheme of integral milk yield curves. The obtained curves once again prove that milk production in animals by udder shares does not end in the same way. Based on the data obtained, it can be stated that the development of a domestic automated milking machine with a quarter-turn shutdown of milking cups is an urgent task today. The obtained data are necessary for the development of a domestic automated milking machine with a quarter-turn shutdown of milking cups

The article presents research methods for the developed irrigation systems, for increasing the efficiency of water use in the agricultural sector. Based on an analysis of literature and patent sources, the authors present ways of modifying irrigation systems, such as physical and hydraulic barriers and magnetic treatment of irrigation water. The article also presents the results of laboratory tests of the proposed drip irrigation system. It investigates five different types of drip trays to quantify hydraulic performance. Researchers obtained dependencies of uniformity of water flow through the drip trays when changing the operating pressure in the system.

Vacuum pumping devices designed for dosing, mixing, transporting and distributing feed; milking cows; milk processing and other technological processes in agriculture are among the main components of the technological processes of animal husbandry. In order to improve the technical characteristics of vacuum pumping devices, widely used in all industries, it is proposed to use a pulsating jet apparatus installed on the suction port of a liquid ring vacuum pump. To characterize a stationary flow, the reduced velocity and the Reynolds number are usually used, and in the case of a pulsating flow, the relative frequency and relative amplitude of the pulsations are added to them, which are necessary to determine the design and technological parameters. One of the main design parameters of the operation of a jet vacuum pumping device is the ejection coefficient, the increase of which is achieved by deliberately violating the stationary mode of material flow by adding a pulsating device. The object of experimental research was a jet apparatus with a pulsating active flow. As an interrupting mechanism for an ejector with a pulsating active flow, it is advisable to use a ball-shaped valve made of various materials, which, due to the pressure drop and a return spring, can pulsate at a frequency of 90 ... 100 beats/min. During the experiments, the change in the supply of a water-ring vacuum pump with a pulsating jet apparatus was determined depending on the materials of the ball-type valve (steel, rubber and textolite), the suction pressure (1; 5; 10; 20; 30; 40; 50; 60 kPa), valve pulsation frequency (85; 100; 115; 130 beats/min) and ejector inlet pressure (20; 30; 50; 60 kPa). The best result is noted when using a valve in the form of a ball made of steel. In this variant, the supply of a water ring vacuum pump with a pulsating jet apparatus is increased to 14.5 m3/min, and the maximum supply is provided at a pulsation frequency of 90...100 beats/min