The article presents the results of studies of the comparative sorption activity of the preparations «Belvetsorb», «Ultrasorb», «Trepel» and «Ligsorb» in relation to methylene blue and methylene orange.

In the thesis describes a material on the morphology of the adrenal medulla of cattle. Installed topographic features adrenaline and noradrenaline cells, their comparative morphology and growth patterns under the influence of preparations based on bioelements.

The article presents data on the study of the productive qualities of broiler chickens when using probiotic food additive «Probion-forte».

The article presents the results of the study of the morphological and biochemical composition of the blood of piglets when using infusion, decoction and complex preparations «Vakhtotsid» and «Meniant» from the leaves of the triple-leaf watch.

The paper deals with the parasites and predators of blackflies in water-currents of the Belarusian Lakeland. It is described the biological activity of collection strains of Bacillus thuringiensis and also an entomopathogenic fungus Beauveria bassiana on Wilhelmia equina larvae of the third age in a comparative aspect. It was shown that the parasites of the preimaginal stages of blackflies are microsporidia, mermitida and fungi. The data resulting from the study suggest the possibility of using B. thuringiensis studied strains to population control of blood-sucking insects in particular of the family Simuliidae.

The structure of the community of rodents and their endoparasites in the city of Minsk was analyzed. The main changes in the species composition and abundance of rodents and their parasites in urbanized areas have been revealed in comparison with natural habitats. The peculiarities of the spatial distribution of rodents and their parasites in urban areas are analyzed, the most numerous and widespread groups of rodents and their parasites are identified in the Urbollandscape.

As a result of the conducted studies, the adverse effect of industrial production technology on the metabolism of the fattening young pigs was found. Deviations from the norms for the content of trace elements in the blood (copper, zinc) are more characteristic for the second fattening period than for the first period (100 % and 50 %, respectively, against 40 % and 10 %). The content of inorganic phosphorus, the hormone of the thyroid gland T4, the thyroid-stimulating hormone in all selected swine blood samples did not comply with the norms.

The analysis of seasonal dynamics of Apodemus (Sylvaemus) flavicollis (Melchior, 1834) population in the undeveloped areas of the city of Minsk was carried out. The main regularities of the dynamics of the number of helminths of Ap. (Sylvaemus) flavicollis in different seasons of the year in urban areas are established. Differences in helminths invasion of Ap. (Sylvaemus) flavicollis in the natural and urbanized areas were revealed.

The article presents the development of a product safety management system based on the analysis of hazards and critical control points (HACCP). It is shown that the ISO 22000 food safety management system and the FSSC 22000 certification scheme are widely used as a result of innovative development and improvement of food safety management based on HACCP principles.

The screening of the nucleotide sequences of the fliC gene to salmonella of various species circulating in pigs, fur animals, birds and cattle was carried out and specific primers for Salmonella typhimurium were selected. As a result of selection of optimal concentrations of reaction mixtures and filtration parameters, a PCR test system was designed to detect the genome of Salmonella typhimurium. It has specificity, the absence of nonspecific Schmer, sensitivity of at least 20 copies of DNA genomes in the sample.

Researches on isolation and identification of lactic acid bacteria from bees and bee products are carried out. The cultural-morphological and production-valuable properties of the isolated isolates are investigated, three cultures were identified as Lactobacillus reuteri, not previously isolated from honey bees.

The article presents the results of the assessment of the morphology of the 3 KG cell line, as well as the results of the studies of the 3 KG cell line for the presence of bacterial and viral agents: the culture fluid of the 3 KG cell line was investigated in the hemagglutination reaction, and the monolayer in the hemadsorption reaction.