State of immune system of broiler chickens after administration into their diets of nonspecific immunostimulative drugs – bacterial liposaccharide Alveozan and spore-forming aerobic bacterium Bac. Alvei (KMIEhV-11) and probiotic on the basis of lactic acid bacillus Dialakt was studied in the conditions of the Republic of Belarus. In course of the study there was proved that the analyzed preparations had expressed immunogenic activity, rendered the positive influence on natural resistance of broiler chickens. Under action of preparations Alveozan and Dialakt in broiler chickens there were stated the following changes: improvement of protein absorption from gastro-intestinal tract in chickens at the age up to 19 days; there was achieved a hepatic protection effect at birds at the age up to 36 days. The specified changes did not depend on application regimen of the given preparations.

Application zoned bare-grained oats grades in a diet of chickens and hens-layers of egg breeds makes positive impact on efficiency of a bird, forage conversion, reduces expenses of forages for manufacture of eggs that allows to receive additional profit. The maximum norm – 40 % bare-grained oats in mixed fodders of hens is defined

Application in diets of breeding bull calves of an optimum dose of selenium (0,4 mg on 1 kg of a solid of a diet) renders positive influence on formation of reproductive ability of bull-calves: promotes increase daily average gains live weight on 7,1%, indicators of natural resistance – on 0,6-6,7% and to improvement of quality sperm production – on 16,4% during the winter period. During the summer period daily average gains live weight on 6,8%, indicators of natural resistance – on 0,5-13,9% and to improvement of quality sperm production – on 15,7% accordingly

The given research results of feeding highly productive cows with new forage supplement of humic-melanoidine nature during the milking period show stable mineral metabolism, correction of their redundant supply within the diet, perfection of digestion and transition into milk as well as minimizing consequences of metabolism intensification. Reception new forage supplement promoted improvement of mastering by an animals organism of necessary iron during the given physiological period, to restriction of mastering of the microelements equal to the category of heavy metals

The research in RUP Scientific and Practical Center of Animal Breeding of National Academy of Sciences on such parameters as consumption of forages, processes of rumen digestion, morphological and biochemical structure of blood has shown that usage of wet grain preserved with Kormoplus for young cattle fattening has a positive effect on physiological condition and digestibility of nutrients and promotes nitrogen usage by animals that increases at 7,0 and 1,6%

Feeding replacement calves of 369-460,8 kg of live weight with diets of non-degradable protein level that is 10% higher than approved norm increases metabolically energy transformation into weight gain energy from 19,10 to 20,81 MJ or at 9% that promotes increase of average daily weight gains at 5% and decrease of energy spends at 5% counted per 1 unit of energy for weight gain. Ejaculate volume is increased at 14% and sperm concentration – at 12%

Feeding replacement heifers of 6-12 months of age with mixed feed that contains 20-25% of rape and lupine grain within winter and summer diets instead of sunflower cake allows to obtain the average daily weight gain of 893-927 g at forage spends of 6,0-6,3 с of forage units. The cost of these mixed feeds is decreased at 14% and prime cost of 1 c of weigh gain-at 6-15%

It is determined on the basis of conducted researches on perfection of energy-protein nutrition norm of young cattle of 6-12 months of age that 11,5 MJ of exchange energy at 6-7 months of age and decease to 10 MJ for 12 month of age is needed in 1 kg of dry matter to get 1000 g of average daily weight gain. 8-9 g of digestible, 5 g of non-digestible protein should come for 1 MJ of exchange energy of a diet. 1 kg of DM (Dry Matter) should contain 133-150 g of crude and 46-54 g of non-digestible protein

There are the results of the scientific and economic experiment by the study of multifermentable supplement eniciencyin calves nutrition, it has been established that young animals with the supplementary ration by the and of the experiment have maintained the live weight on 11.4% higher compared with the control group of animals. The rate of natural phylactic power of an organism in young animals with the supplementary ration was considerably higher

Increase of protein and energy nutrition norm of dry cows in winter and summer periods at 10 and 15% by protein and vitamin mineral additive based on peas and rape promotes increase of average daily weigh gain at 5,4-12,2%, calves live weight at birth – at 3,6-8,1%, average daily weigh gain – at 3,9 and 12,1%. Optimization of energy and protein content in diets allows to increase milk yield at 5,1-9,9% and decrease forage spends per 1 unit of product at 4,6-9,1%