The main priority of agriculture development is accelerated development of animal husbandry. Dairy farming is a priority sector not only in the South of the Tyumen region, but throughout Russia. The industry is given much attention in the form of state support. In the process of agrarian transformations currently in the Tyumen region, the main emphasis is on the development of the private sector economy, the development of small commodity production and small farms. The development of dairy farming in the region has a primarily social orientation, its purpose is to ensure that the needs of social institutions in milk. The goal of the reforms is to increase the volume and quality of given for recycling milk, improve the genetic performance of cattle, improvement of the territory from leukemia, increasing employment and incomes of the rural population. In the Russian Federation, as in other countries of the world community, issues of scientifi c support for any industry to solve by specialized high schools, as here is concentrated the main contingent of highly qualifi ed personnel, and there are scientifi c schools. Therefore, the use of scientifi c and technological progress will contribute to the development of innovations aimed at improving effi ciency and productivity not only in private enterprises but also in the agricultural sector as a whole.

Especially important in the life of young farm animals is suckling period and following a transition period of growth, when the need for nutrients due to intensive animal growth is large, and the development of enzymatic systems of the gastrointestinal tract is not yet complete. In this regard much attention is given to production of feed additives and means of probiotic and prebiotic action, enzyme preparations, preventive additives of complex action aimed at stimulation of nonspecifi c immunity, prevention and treatment of mixed gastro-intestinal infections and digestive disorders caused by the violation of microbiocenosis of the digestive tract, improving digestibility, reducing the impact of anti-nutritive factors of feeds. The data on feeding of larvae of fl y Hermetia illucens to suckling calves in a period of growth have been given in the article. The object of study is crushed larvae of fl y Hermetia illucens in combination with the probiotic, which may be used in the feeding of young cattle to enhance its preservation and growth. It has been found as a result of comprehensive researches that the use of larvae of the fl y Hermetia illucens contributed to the increase in average daily gains of calves of experimental groups in comparison with control by 91,48 and 126,67 g or by 10,03 and 13,89 % (P < 0,05), respectively, while reducing the expenditures of feed per unit of gain. Recommendations on the use of biomass insects (fl y larvae Hermetia illucens) in the diets of calves in a mixture with a probiotic in an amount of 0,5 kg/t of feed, which helps to improve the realization of their productive potential and health.

The most important condition for the modern feed production is the use of the latest technologies and techniques of feed preparing, which provide the most complete preservation of the nutritional and physiologically benefi cial properties with minimal expenditures of material means. This requires the development and mastering of advanced technologies of feed production and feed preparing contributing not only to preserve but also to increase the content of nutrients and energy, as well as the effi ciency coeffi cient in used feeds, especially in the rearing of replacement young cattle. The use of biological preservatives (Biolax-U, formic acid), in the period of feed preparing to preservation of essential nutrients, improved dietary properties and organoleptic characteristics of feeds, improve palatability of prepared feeds, their digestibility and accessibility that helps to increase average daily live weight gain of replacement heifers. This contributed to the increase in live weight gain in the 2nd experimental group by 11,5 and in the 3rd experimental group by 15,7 %, and also reduce the expenditures for 1 kg of live weight in the application of biological preservative Biolax-U and increase pro

Promising component in the production of compound feed is winter rye, which is not inferior in its energy characteristics of wheat, barley and corn. Winter rye is prevalent in all districts of the Orenburg region, occupying quite an extensive acreage. A comparative research of the productive activity of the newly developed variants of compound feed, with natural grain of winter rye subjected to extrusion separately and enriched with a mixture of 15 % urea, 10 % molasses, 10 % sunfl ower oil sludge and 65 % of fi ller in the form of rye grain included in the ration of steers. In compound feed No. 1 was introduced to the natural winter rye in the amount of 15 % by weight, in recipes No. 2 and No. 3 for part of the barley and wheat was introduced extruded rye in the amount of 33 % as an energy ingredient, and in compound feed No. 3 was introduced 20 % extruded rye with the nitrogencarbohydrate-fat additive (rye 65 %, urea 15, molasses and sunfl ower oil sludge 10 %) as a protein component instead of presscake. During the period of scientifi c and economic experience relative intensity of growth of steers of the control group was by 6.48 and of 8.12 % lower than their herdmates from the experimental groups (recipes No. 2, No. 3), on the background of the best fi gures in the 2nd experimental group (by 1,64 %) compare to herdmates of the 1st experimental group. Thus, the results suggested that appropriate use of experimental compound feed in the structure of rations for growing steers for meat. Steers receiving extruded rye such as separately as in combination with the nitrogencarbohydrate-fat additivewith higher productivity have been characterized.

Ensuring high milk productivity while maintaining the terms of economic use and reproductive function in cows is one of the urgent problems of modern dairy farming. The main indicator of the nutritional value of animals feeding is its balance in accordance with the needs in dry matter and energy, protein and carbohydrates, fats, and other biologically active substances. The experience of domestic and foreign practice shows that the higher the eff ect of additives in the rations of biologically active substances get when they are used integrated in the form of special premixes. It has been proved in the work the feasibility and high effi ciency in the composition of total mixed rations for high productivity cows during the period of increasing the milk yield of organic forms of trace elements, mineral premixes and natural mineral supplements that provide adequate nutrition and a more complete realization of genetic potential of cows. Due to the fact that manganese, copper and zinc are defi cient in plant feeds the southern areas of the Tyumen region to meet requirements of lactating cows only by the selection of feed is not possible. Therefore, to balance the rations of cows on these trace elements you must use the appropriate balancing additives with high biological availability. The inclusion of biologically active substances in the rations of cows in period of increasing the milk yield increased the milk production.

The infl uence of the biological complex of feeds on the productivity and composition of intestinal microfl ora of broiler chickens has been carried out. The positive infl uence of the studied drug on the performance of live weight of broiler chickens, livability of poultry and the composition of the intestinal microfl ora has been established. Over the period of experiment the group of broiler chickens treated with an additive to the basic diet of 2 % of the biological complex of feeds has been superior to the control group in terms of gain in live weight and average daily gain. In this regard, we can assume that the biological complex of feeds has a positive eff ect on the organism of broiler chickens and accelerates their live weight gain. There is a high livability of the livestock in the process of growing. The use of the complex biological of feeds in feeding broiler chickens contributes to the creation of resistant normal fl ora in chickens and its impact on the suppression of pathogenic and conditionally pathogenic microfl ora of the gastrointestinal tract. The application of the biological complex of feeds in the feeding of broiler chickens allows to obtain ecologically pure product without the use of antibiotics.

The researches to study the infl uence of the feeding of probiotic drug “Levisel SB Plus” on productive traits of broiler chickens of cross “ISA-15” under the conditions of Krasnodar region have been carried out. It has been established that the use of probiotic in an amount of 0,5 kg/t of feed (the 2nd experimental group) increases the yield of carcasses of the fi rst category by 2 % in comparison with the 1st control group. In the 3rd experimental group the yield of the fi rst category was 95 %, which is 3 % higher than in the 1st control and 1 % higher than in the 2nd experimental group. In the carcasses of chickens of the experimental groups the content of muscle tissue was more than in the 1st control group. In the 2nd experimental group it amounted to 892,5 g, which was higher by 100,3 g (P > 0,99) than in the 1st control group. The highest content of muscular tissue was in the chickens of the 3rd experimental group – 953,2 g or by 161 g (P > 0,999) higher than in control group and by 60,7 g more than in the carcasses of chickens of the 2nd experimental group. The content of internal adipose tissue, kidney and lung in birds of all groups were almost the same. The inclusion in the composition of compound feed probiotic helped to reduce the content of skin with subcutaneous fat in the 2nd experimental group by 2,5 % and in the 3rd experimental group by 3,0 %. When the use of drug “Levisel SB Plus” in the amount of 0,5 kg/t of feed (the 2nd experimental group) the profi tability of production of poultry meat made up 35,77 %, which is 3,55 percent higher than in the 1st control group. The inclusion of tested additive in diff erentiated standards (the 3rd experimental group) improves the profi tability to 38,18 % that is by 5,96 % higher in comparison with the 1st control group and by 2,41 % with the 2nd experienced group.

The intensifi cation of animal husbandry is impossible without a strong forage base, as well as complete feeds. However, it is practically impossible to ensure high animal productivity only at the expense of feeds of own production. They are often in insuffi cient quantity contains protein, essential amino acids, minerals and vitamins. The use of unbalanced rations leads to lower productivity of animals, overspend of feeds per unit of production, increase its prime costs and ultimately reduce the eff ectiveness of branch of dairy cattle breeding. The analysis of milk productivity of cows through the use of vitamin and mineral energy additive based on organic acids “Don feed balance”has been presentedin the article. The researches have been aimed at identifying the most optimal dosage of this additive. It has been found that the use of vitamin and mineral energy additive“Don feed balance” in the amount of 200 g per day per the head resulted in a statistically signifi cant increase in the yield of milk per lactation by 463 kg or 7,7 %; and in recalculation on basic fat and protein content by 912 kg or 14,2 %; mass fraction of fat and mass fraction of the protein by 0,07 and 0,13 %, respectively. This gave grounds to recommend the use of this additivefor cows feeding in the dry period for 45 days before calving in the dose of 200 grams per day per a head.

In the composition of grain feeds a special place grain hullless barley variety Nudum 95 occupies whose distinctive feature is the high content of crude protein by 7,6 % higher than in grain of chaff y barley (variety Chelyabinsk 99). In addition, the weevil of this variety is free fl owering glumes and is characterized by a low content of crude fi ber of 2,70 % against 5,60 % in hulled grain variety. The increased feeding value of grain hulless variety resulted in the best absorption of its nutrients by the animal organism. The absolute gain in live weight of young pigs, rabbits, geese and broiler chickens of experimental groups treated with the composition of feed grain barley variety Nudum 95 was higher than in the control groups, respectively, 18,3 %, 16,0, 2,0, and 2,1 %. Identical the results have expressed of average daily gain in live weight of animals and poultry. The weight of the cooled carcasses of rabbits of the experimental group was higher compared with the control variant by 17,9 %. Preslaughter weight of goslings-broilers of the control group was less by 3,6 % than when feeding grain variety Nudum 95. Weight semi eviscerated weight and eviscerated weight of the goose carcasses in the experimental variant was higher than control by 7,2 % and 11,5 %, respectively. Broiler chickens of the experimental group had the pre-slaughter weight 1,9 % more than in the control variant. Weighing of semi eviscerated chickens has showed a signifi cant excess mass of the carcasses of the experimental group over the control by 5,7 %. Weight of eviscerated carcasses of chickens of the experimental group surpassed the control group by 3,5 %. It has been recommended for feeding farm animals and poultry to input in the compound feed grain of hullless barley variety Nudum 95.