Currently, wide application of diff erent feed additives receive, therefore it seems promising the use as additives of natural mineral sorbents, in particular cudyurites (from Altai “cudyur” – a place where animals consume the earth). The goal was to determine the optimum rate of input of cudyurites in the diets of laying hens and to provide a comparative analysis of the effi ciency of cudyurites of diff erent deposits in the Novosibirsk region. Experiments to determine the optimal norms of input of cudyurites in the diets of laying hens have shown that the input in the diet of poultry 5 and 6 % of cudyurites Kamyshlovsky deposit increases the total production of eggs by 2,4–3,2 %, and reduces feed consumption, increase of productivity, the livability of poultry. It has allowed to increase the level of profi tability of the breeding birds by 13,3 %. The use of cudyurite of Zaprudikhinsky deposit in the composition of the diet for poultry in a dosage of 5 % to the diet contributed to the reduction of feed consumption per unit of production, increase productivity, livability of poultry and production effi ciency. Comparative evaluation of cudyurites of diff erent deposits has shown that when fed to breeding laying hens by high-cherty natural complexes, the highest egg production (115,5 eggs) was observed in birds received cudyurite of Zaprudikhinsky deposit. Some below it was in laying hens in the diet of which Litensky and Tatarsky cudyurite were included (113,2 and 111,8 eggs). In the control group this indicator was 105,7 eggs. A similar dependence was observed at the yield of egg mass.

Full value feeding is crucial in the realization of genetic potential of birds. Feed additives containing various components, vitamins, micro and macronutrients, enzymes, probiotics, antibiotics, antioxidants, sorbents, immunostimulators are currently widely used in feeding of birds. The aim of this work was to study the possibility of using the drug Phyzyme XP 5000 G in feeding the goslings-broilers and its influence on growth rate and some indicators of cellular immunity. The results of studies on the eff ect of enzyme drug Phyzyme XP 5000 G on growth and immunological parameters of blood goslings-broilers have been given. The results show that in all age periods the goslings-broilers experimental group surpassed their herdmates from the control group. Thus, cellular factors of natural resistance of goslings consumed the drug Phyzyme XP 5000 G at doses of 50, 100 and 150 g/t in compound feeds, were more expressed, i.e. the goslings of the experimental group had greater resilience and adaptability in comparison with the control herdmates. It has been found by the studies that feeding to the goslings-broilers enzyme drug Phyzyme XP 5000 G in the composition of the complete feed has a positive eff ect on the dynamics of their live weight and condition of cellular immunity factors.

Feeds are the main component of high productivity of cattle. Optimally choosing their ratio in the ration of the animal, we can control enzymatic processes and digestibility in the rumen, thereby achieving maximum bioconversion of nutrients into production. The study of the infl uence of use of new high-energy feed additive on milk productivity of cows in the period of increasing the milk yield and stabilization of lactation has been carried out. The article presents the data obtained as a result in research and practical experiment on the lactating cows of Kholmogory breed, when in their in ration a new testing high-energy feed additive which has been prepared from products of processing of agricultural products in conjunction with the secondary raw material processing industry has been input. The input into the ration of lactating cows high-energy feed additive led to the increase of milk production, as well as enhance the mass proportion of fat and protein in the milk. Studies on the infl uence of non-traditional feeds, which are being components of the feed additive on the productive traits of animals, marked the beginning of the works on the creation of new high-energy feed additive for cattle in order to compensate in the rations of animal of protein and mineral defi ciency.

Among the nutritional factors of dairy cows a special place minerals occupy. The animals’ need of minerals in minimum amount, while for cattle they are indispensable in the processes of growth and strengthening of bones, metabolism in muscle, epithelial and hoof tissues, and reproductive processes. The reproductive and hematological indicators cows depending on the availability of rations by trace elements have been studied. The infl uence of a complex of trace elements, included in the ration of cows, and their positive eff ect on hematological parameters and reproductive traits of animals has been established. The input in the ration of lactating cows of feed additive had a positive eff ect on the reproductive functions of animals. The open days period in cows of the 1st and 2nd experimental groups was shorter by 4,4 and 22.2 days, and interval between calving was shorter by 6,9 and 12,5 days, respectively, than in herdmates of the control group. The highest reproduction ratio had been observed in cows of the 2nd experimental group 1,01; it was higher by 0,03 and 0,01 than in herdmates from the control and the 1st experimental groups, respectively. Changes in the protein composition of the blood of cows of the experimental groups indicate about more intensive metabolism and, as a result of better use of feed nutrients for milk production.

The study of algae as biomarkers of pollution of water ecosystems has of the great interest from side of scientists. Algae monitors allow us to obtain an integrated picture of pollution of water ecosystems, which is especially important in the implementation of short-term forecasts at discrete reservoir pollution. It has been established that in blue-green algae the content of heavy metals is subject to the following regularity: Mn > Cr > Ni > Co > Cd > Pb > Fe > Cu > Zn. The fi nding data suggest that the migration from water to phytoplankton, elements such as Cu, Zn, Pb, Cd, Co “lost” in a greater degree than Mn and Cr. This indicates that there in addition to sorption (biological) mechanisms of absorption of heavy metals in phytoplankton. With the increasing of trophic level the content of trace elements which have been considered has to naturally reduce in the food chain. Moreover, for elements with similar physical-chemical properties, the degree of this reduction should be proportional to their concentrations in river water.

The results of studies on the cultivation of grain corn production and verifi cation in the conditions of Central forest steppe zone of the Trans Urals have been presented in the article. Comparative economic effi ciency of grain production of corn and spring wheat has been given. It has been established that in terms of minimization of processing of the soil and low availability of agricultural machinery for corn cultivation of grain in the conditions of Central forest steppe zone of the Trans Urals well proven seeders-cultivators-type SKP-2,1-equipped anchor openers, and grain harvesters with a device for threshing the cobs. The best conditions for the cultivation and care of crops of corn are formed in two-fi eld grain crop rotations (corn-wheat) on the background of the combined system of tillage (plowing under corn, small surface under wheat). Grain technology of corn, despite the increase in total cost of cultivation in Central zone of the Trans Urals provides higher and more stable grain yield and better economic performance compared with spring wheat. It has been established by fi eld experiments and production practice, the effi ciency of agricultural technology of corn cultivation and its accessibility for ordinary agricultural producers.

The issues of improving the feed base of pig breeding through optimization of the composition of compound feed have been discussed. It has been noted that a distinctive feature of the varieties of hulless barley Nudum 95 is increased energy nutrition, high protein content, amino acids, macro- and micronutrients. In addition, the caryopsis of this variety is free fl owering glumes and is characterized by low fi ber content. During the study of the chemical composition of grain it has been established, compared with the chaff y barley equivalent (variety Chelyabinsk 99) the crude protein content in hulless barley variety was by 7,6 % higher than in the chaff y barley. The amount of crude fi ber and crude ash in hulless variety is lower than that of the chaff y barley in 2,1 and 1,3 times, respectively. The recipes of compound feed for young pigs during the period of rearing (PC-4), in the fattening period (PC-6) and for feeding in the second phase of fattening (PC-7) have been developed, allowing through the use of high-quality grain hulless barley variety Nudum 95 to exclude from the composition of compound feed such expensive components as soybean and sunfl ower meal. As the result is reduction in the cost of each of the recipes, respectively 1365-1293-371 Rub/t. The coeffi cients of digestibility of dry and organic matter higher in animals consuming hulless barley Nudum 95 by 7,0 % and 4,1 % respectively, crude protein by 9,6 %, crude fat by 3,1 %, nitrogen-free extractive substances by 2,1 % compared to the control group. The average daily gain of live weight of young pigs, consumed as part of the diet of hulless barley was higher by 18,4 %, while feed conversion decreased by 9,4 %.