Morphological and biological characteristic of isospora and eimeria was realized in the conditions of the Republic of Belarus on the basis of carried out measurements and experimental infection minks (Mustela). Research results showed, that in Belarus at mink breeding farm holdings there were determined four species of eimeria and isospores, one of which I. eversmanni - is registered by researchers from the Vitebsk State Academy of Agriculture in the Republic for the first time. The most widespread species is Е. vison (57,03%) was found out in all analyzed 24 fur breeding farms. Species composition of eimeria and isospores did not depend on a sex and typical coat pattern of minks, as well as on a geographical location area of an analyzed farm. Some distinctions in species composition of the intestinal protozoa were observed at minks of different age. Of all analyzed species the most pathogenic proved to be Е. vison and I. laidlawi which in case of infectioning caused animal mortality. | Дана морфологическая и биологическая характеристика изоспор и эймерий на основании проведенной микрометрии и экспериментального заражения норок. Таким образом, по результатам проведенных нами исследований следует отметить, что в Республике Беларусь у норок, разводимых в хозяйствах, установлено четыре вида эймерий и изоспор, один из которых - I. eversmanni - зарегистрирован нами в республике впервые. Самым распространенным видом является Е. vison (57,03%), обнаруженный во всех обследованных нами 24-х зверохозяйствах. Видовой состав эймерий и изоспор не зависит от пола и типовой окраски норок, а также от географического месторасположения хозяйства. Некоторые различия в видовом составе кишечных простейших наблюдались у норок разного возраста. Из отмеченных видов наиболее патогенными являются Е. vison и I. laidlawi, вызывающие при заражении падеж зверей.

The modern technology applied on poultry enterprises of the Republic of Belarus made provision for high concentration of poultry population density at the comparatively small housing areas of integrated poultry farms which caused the deterioration of sanitary conditions in poultry houses, especially by the end of the growing period. Broiler chickens grown under such conditions were constantly experiencing the microbe stress which eventually caused the heightened culling and poultry losses caused by different diseases caused both by pathogenic and conditionally pathogenic microflora. For the current disinfection in presence of poultry it was proposed to use sprayings with malic and succinic acids, which made it possible to realize not only the air sanation in poultry houses, but also increase broiler chicken viability. The highest bactericidal activity of apple acid aerosol against air microflora was stated within 3 hours after carrying out indoors treatment. After disinfection the general microbic air contamination decreased in 2-10 times, quantity of microorganisms of colimorphic groups and staphilococcus in 1,4-1,75 and 2-10 times, respectively, in comparison with the original air values realized before air treatment in poultry houses. In the following, there was stated the gradual increase of a level of microbic air contamination within 24 hours. The best effect of the preparation was stated against Staphylococcus. Thus, the quantity of Staphylococcus in air decreased in 10 times in comparison with initial data

In the conditions of the Republic of Belarus there was analyzed the influence of a fodder additive Water Trit liquid on quality of water and productivity of swine. Research results showed that administration of the fodder additive Water Trit liquid on the basis of organic acids promoted the increasing of productivity of pigs on 8,2% (P less than 0,01) in comparison with pigs of a control group. Improvement of biochemical indices of blood at experimental pigs was marked. The optimum dosage of the fodder additive Water Trit liquid was 4 ml/l of consumed water. Application of the fodder additive at feeding of pigs positively influenced on quality of water and promoted the destruction of pathogenic microflora in it. The results of tests of water by chemical indices, dynamics of body weight after application of acidulent; fiber fraction, albuminous factor were showed.