Exploration of ways to preserve the collection strain of Тrypanosoma equiperdum in an out-of-body

The article discusses results of the research work carried out at the Kazakh Veterinary Research Institute to consider the methods of storage and maintenance of the stored collection strain of Тrypanosoma equiperdum in artificial nutrient media or at low temperatures (liquid nitrogen -196 0C). During storage, it is important that the strain fully preserves their growth, morphological, biological, toxic, antigenic and pathogenic properties. A diagnostic drug of high sensitivity and specificity is prepared from a strain that has completely preserved its properties.Breeding stallions and mares that have had trypanosomiasis are not amenable to treatment. Of great importance is the diagnosticum used for the examination of animals to prevent the disease. The collection strain of Тrypanosoma equiperdum used in practice is stored only in a living organism, that is, in the body of laboratory animals (white mouse, rat and guinea pig). In this regard, the search for alternative ways of its development and storage is an urgent task. The conducted scientific studies on the preservation of viruses and bacteria in various nutrient media and at low temperatures (-196 oC) are found in literary sources.For the first time, we conducted a study of ways to preserve the Тrypanosoma equiperdum strain outside of a living organism (laboratory animals). Blood parasites of Тrypanosoma equiperdum were first isolated from the genital tract of a sick mare, which were initially transmitted to a rabbit by vaccination in several stages in order to adapt to them a white mouse, rat, guinea pig. Currently, this strain of trypanosomes is stored in the laboratory of parasitology of Kazakh Scientific Research Veterinary Institute. The strain of Тrypanosoma equiperdum is very intolerant to the external environment, it does not form spore capsules. A sample of blood parasites from an infected mouse is inactivated within 1.5-2 hours, that is, it dies, so it is scientifically important to find ways to preserve it outside the body.