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The article presents data on studying effects of the enzyme preparation “Rovabio” in rye-containing diets for broilers of the cross “Smena-7” at the age of 14 to 42 days. It was revealed that the inclusion of the enzyme preparation “Rovabio” in the dose of 50 g/t in the combination with trace elements CoCO3 (0.57 mg/kg of feed), Cr2(SO4)3*6H2O (0.38 mg/kg of feed) with the replacement of 15% of wheat to 15% of rye into the diet demonstrated a positive impact of the used dosages of the trace elements on digestibility of organic matter (6.49%), crude protein (4.59%), the protein synthesis and stimulated hematopoiesis in birds. The multienzyme complex increases the integrity of chickens to 96.7% and profitability of poultry meat production by 2.0% due to endo-1.4-ß-xylanase and endo-1.3(4)-ß-glucanase.

In this article violation of the mineral metabolism of plants as a result of secondary contamination with heavy metals (HM), which at high concentrations have a toxic effect on a wide variety of physiological processes, occupies a central place in the problem of the resistance of plant organisms to unfavorable environmental factors. Nanoparticles based on iron, copper and nickel are of considerable interest. The study of the mechanisms of plant adaptation to structurally different nanometals (NM) from the position of changing a number of physiological and biochemical parameters is relevant for a more complete understanding of the adaptive capabilities of organisms in conditions of technogenic nanomaterials. Analysis of the content of photosynthetic pigments allowed the formation of consistent ideas about the selectivity of the effect of nanometals on the components of the pigment system of seedlings, depending both on the composition of the metal and on its concentration. The obtained results serve as additional evidence of the existence of selectivity in the activation of a particular reaction of the plant's antioxidant system, determined by the nature of the nanomaterial. However, a change in the level of ROS in the presence of Ni? and Cu? can be attributed to the non-specific response of plants, since similar changes are characteristic of a variety of stresses of plants and in most cases require further research. In this aspect the main "target" of the action of LF metals was the root system of plants, which determined the interest in identifying mechanisms of phytotoxicity with an emphasis on the study of cell damage in this part of plants.

The intensive development of industry in recent years led to the problem of the environment pollution and the survival of humanity in these circumstances became the central challenge today and affected all spheres of human activity. In some cases, technological processes have gone out of control resulting in the rapid accumulation of substances which are uncharacteristic for biosphere (radionuclides, heavy metals, and other toxicants). As it is known, the blood system and organs of hematopoiesis are the most sensitive, so-called “Critical systems”. In some cases, changes in the blood occur under relatively small doses of substances and may be the only diagnostic indicators of diseases and their consequences. Studying the influence of the feeding level on mineral metabolism causes some interest due to the application of different poultry feeding modes. In addition, the application of some new food means reduces the overall consumption of fodder due to low palatability, which proves the importance of such research once more.