Potassium is the 3rd most important element in the body. It should be ingested daily with feed, as it remains in the body for a short time, and the needs of animals for potassium are very important, since potassium is a cation donor. The article reflects the results of using potassium carbonate in feeding pigs during fattening. Experiments and production tests conducted in the stud farm named after. Lenin of Tambov region. Analysis of the productivity of pigs indicates a positive effect of introduction to the diet of animals of potassium carbonate. Inclusion of 2 and 4 kg of potassium carbonate per 1 ton of feed had a positive effect on productivity, physiological processes, the clinical state of animals, digestion, the development of internal organs and the meat qualities of fattening young pigs. The average daily weight gain in pigs during fattening increased by 22 and 33 g, or by 3.0 and 4.7%. This indicates a better absorption of food in animals that received carbonate in their potassium intake. Indicators of meat productivity in pigs fed in rations of potassium carbonate were higher in slaughter output of carcasses by 0.8 and 1.2% and in meat quality indicators. The lard thickness at the 6-7 thoracic vertebra level was less in the experimental groups receiving the feed additive in both diets by 1.0 and 0.5 mm, and the area of the “muscular eye” increased, respectively, by 0.8 and 1.5 cm². Analysis of the chemical composition of the meat showed a high nutritional value from experimental animals. The meat contained 4.3-4.1% fat, 21.9-22.2% protein. These indicators correspond to high commodity and taste of meat. Calculations of the economic efficiency of pork production using potassium carbonate show that an additional net income of 194.4 and 271.8 rubles was received for 1 head with a live weight of62.7-63.6 to 109.8-111.6 kg experienced groups of fattened pigs.

The organized research on feeding young pigs with different doses of whey-mineral-vitamin additives resulted in the following: 2,5% of whey-mineral-vitamin additives contributed 15,4% to the increase in average daily growth, while 3,0% of this feed additive gave more than 20,8% of the average daily growth in comparison with the test result. Studying nutrient digestibility on the basis of scientific and business experience it should be stressed that the increased dose of feed additive in the 3rd tested group resulted in 3,22% growth of organic matter digestibility, 2,7% growth of crude protein digestibility, 1,9% growth of crude fiber digestibility and there are 1,8% more nitrogen-free extractives than in the control result. Morpho-biochemical indicators of young pigs’ blood were within the physiological norm while using whey-mineral-vitamin additives. The increase of whey-mineral-vitamin additives amount in feed mixture positively influenced the growth of red blood cells, hemoglobin and total protein in blood of the 3rd tested group, 6,9% increase compared with the control result to be exact. The 2nd tested group which was fed with 2,5% of whey-mineral-vitamin additives showed better results than control ones, but less in comparison with the results of the 3rd tested group.

Currently, the use of enzymes as feed additives is standard practice, and most feed for broiler chickens in industrial poultry contain enzymes. The use of a protease enzyme can increase the protein utilization rate and therefore can reduce the protein requirement in broiler chickens. Our studies have shown that the introduction of the protease Sibenza DP 100 in addition to the main diet of broiler chickens without reducing the nutritional value of crude protein and digestible amino acids has a positive effect on maintaining the integrity of intestinal villi, which probably allows the bird to absorb more nutrients feed, contributing to the increase in productive performance. The use of Sibenza DP 100 in the diet with a decrease in the nutritional value of crude protein and digestible amino acids in accordance with the matrix by 2.5% is characterized by a good state of the histological picture of the duodenum, with the bird slightly at the end of fattening inferior to the control of live weight and was characterized by the most effective consumption of feed per 1 kg of live weight gain among all experimental groups. Application Sebenza 100 DP in the diets with reduced nutritional value in accordance with the matrices on 5 and 7.5% for crude protein and digestible amino acids on the totality of the studied parameters was ineffective.

The work shows the feasibility of processing after alcohol bards in feed for farm animals and poultry. The kinetic laws of drying after a grain of alcohol are given by the combined method, which includes combinations of the convective and microwave methods of drying. By comparing the kinetic laws of the drying process by the convective method and the combined method, the advantages of the combined drying method are shown. Based on the above experimental data on the kinetics of the drying process and preliminary calculations, the duration of heat treatment with the combined method is reduced by 3040%; in terms of energy costs, the convective drying method is 15% higher than the combined drying method. Based on the above studies, the article concluded that the combined drying method is more effective than the convective drying method.

In recent years, special importance has been attached to turkey breeding as one of the most effective poultry industries, supplying the most valuable meat of all species of birds. For the production of turkey meat is used heavy, medium and light crosses turkeys of different breeds, including new - Hybreed. The aim of the work was to compare the qualities of turkeys of different crosses of white broad-chested and hybrid birds Hybreed. In hybrid birds Hybreed in the breed heavy cross on live weight in all periods exceeds the average cross of 670 grams or 1.31 times in 4 weeks, 1040 grams or 27.4% and then 61.4-70.6% (P < 0.01, P < 0.001), in periods hybrid bird Hybreed and its crosses have a higher genetic potential of productivity, have high rates of growth and its intensity, which allows before slaughter in 120 and 150 days, depending on the cross to have turkeys with a high live weight of 10,83-23,20 kg, respectively.The advantage of the output of muscle mass and the edible part of the carcass remains for a hybrid bird Hybrid. This applies to both medium and heavy crosses of this breed group. They were superior to turkeys of white broad-chested breed by pre-slaughter weight and weight of chilled carcass on the average cross by 2.53 and 2.51 kg, respectively, or by 23.4-28.6%; by heavy cross by 10.9 and 8.55 kg or 47.0%. The profitability of turkey meat production, depending on the cross and breed (breed group) ranges from 58.8% (group 2, heavy cross, white broad-breasted turkey) to 193.2% (group 4, heavy cross, Hybreed highbrid birds).

The article substantiates the high concentration of sediment in the flow of water from the Amudarya river, whose bed passes on easily eroded soils. The main indicators of the hydrological characteristics of the middle reaches of the Amudarya river, where the main water intakes of the republic are located, are given.

When harvesting potatoes, regardless of the means of mechanization used, digging up potatoes from the soil, separating tubers from the ground are mandatory operations. At the same time, a number of factors affect the quality performance of these operations - the humidity and soil contamination, the design and operation of the working parts of the potato digger and the separator. To substantiate the latter, it is necessary to study the technological process on the basis of mathematical modeling. Modeling and researching the process of harvesting and post-harvest processing of potatoes and the interaction of tubers with each other and the working bodies can justify the conditions for reducing damage and reducing overall costs, since the costs of harvesting and post-harvest processing are also closely related to losses in harvested crops. Research has shown that the efficiency of harvesting and post-harvest processing of potatoes is more influenced by the price of product sales. Analysis of the dependence of the cost of harvesting and post-harvest processing of potatoes per unit of area, yield in monetary terms and process efficiency on a probabilistic indicator of the quality of technological operations performed shows that production, in addition to the cost of implementation, is also affected by the implementation of technological operations, machine complex and technology, selected by its working bodies.

The article presents results of the study of maize (Zea mays L.) varieties from collection of National Genbank at the Institute of Genetic Resources, in optimum conditions of cultivation (supply rainfed) of maize in Azerbaijan, Zakataly Regional Experimental Station of the Research Institute of Crop Husbandry, obtained on study of yield structural elements and productivity depending on the use of pre-sowing seed treatment with ozone-air mixture. In check variant, the seeds of the varieties were treated with Vitavax. It was found that in check variant, the studied varieties of maize are characterized by vegetation period on average 96-120 days, and in the experimental variant - 94-117 days. Results of the study indicate that, despite the short cob length in most varieties, the number of seeds in a row, the output of seeds from the cob, 1000 kernel weigh and, accordingly, productivity was higher in the experimental variant. According to the study it was found that in check variant at the studied varieties, the length of the cob is longer, but due to the incompleteness of top of the rachis, the number of seeds on the cob is not the maximum possible, which is due to the high temperature and lack of moisture accompanying the flowering and fertilization period. But in the experimental variant, a completely different view was observed, because under the same growing conditions the cob almost all of the studied varieties were nearly completely filled, which is explained by the increased adaptability of plants due to the stimulating effect of ozone on the development already from the early stages. Differences in the dynamics of ripening of maize varieties caused by pre-sowing seed treatment with ozone-air mixture affected productivity. As a result, the effectiveness of pre-sowing treatment of seeds of maize varieties with ozone-air mixture in a 5000 ppm x min regime was revealed.

One of the most important agrobiological problems of our planet, disturbing experts and the public in recent decades is the rapid disappearance of various plant species due to the irrational withdrawal from agricultural turnover of vast territories. In these circumstances, food shortages are becoming a real threat to the health and even life of the world's population. Such depletion of biological resources concerns both modern and future generations, it becomes harmful to them - warn experts of food and agricultural organizations of the United Nations. Various types of food storage facilities, including seed, are being established in different countries. Thus, in Russia, several storages have been created, in the US a national laboratory for long-term storage of seeds has been organized, in Norway there is a "doomsday Storage".

The article deals with the results of studies of the influence of mineral fertilizers on the yield of green mass of alfalfa in the conditions of the Ganja-Kazakh zone of Azerbaijan. Ganja-Kazakh region is one of the important, from the point of view of a sustainable developing agricultural sector, economic regions of Azerbaijan. Alfalfa is one of the most important cultures of Azerbaijan, it plays a major role in the development of animal husbandry. The use of mineral fertilizers is one of the necessary agrotechnical measures of agriculture, contributing to an increase in the yield of agricultural crops including alfalfa. Under the conditions of the Ganja-Kazakh zone, the restoration of the fertility of low-yielding gray-brown soil and an increase in the yield of green mass of alfalfa is important. In this regard, we were tasked to determine the effect of mineral fertilizers on yield and quality of green mass of alfalfa. The investigation has been carried out in 2016-2018 at the Fakhrali Experimental Production Practice Base of the Beekeeping Center in the Goranboy District of the Ministry of Agriculture of the Livestock Scientific Research Institute. The soil of the experimental plot is carbonate, gray-brown (chestnut), medium-heavy loamy. The content of nutrient elements decreases from top to bottom in meter horizons. According to the accepted gradation in the republic, these soils are poorly supplied with nutrient elements and need fertilization. The study used a variety of alfalfa AzNIHI-262, the area of plots 144 m² (20x7.20 m), the repetition of the experiment 3-fold. Agrotechnical cultivation was carried out according to the accepted methodology for the conditions of the Ganja-Kazakh zone. The experience was laid according to the methodological instructions (M.V.AUA, 1975), the seeding rate was 15 kg/ha. As the mineral fertilizers are used: nitric-ammonium nitrate, phosphate-simple superphosphate, potash-potassium chloride. The full dose of phosphate and potash fertilizers was applied in the fall for plowing the first year of life of alfalfa, the second year of life was applied in early spring, and nitrogen fertilizers were used in the spring as top dressing after the first cut. On the basis of the conducted research, it can be concluded that in gray-brown (chestnut) irrigated soils in the Western zone of Azerbaijan in order to obtain a high-quality crop of green mass of alfalfa and the restoration of soil fertility in this zone should be applied mineral fertilizers in the norm. N_e0P_g0K_e0 kg/ha.

This paper proposes a new criterion coefficient to assess the significance of the region from the point of view of melliferous importance. In the new method influence the honey productivity is increased in significance compared to the influence of area of melliferous areas.