EVOLUTION OF PATOGENICITY CLOSTRIDIUM CHAUVOEI

• Published in: Scientific Messenger of LNU of Veterinary Medicine and Biotechnology
• Main Authors: Busol, V.O., Mandugra, M.S., Boyko, P.K., Kurtyak, B.M.
• Format: Article in Journal/Newspaper
• Language: Ukrainian
• Published: Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv 2016
• Subjects: Antarc*; Antarctica
• Online Access: https://nvlvet.com.ua/index.php/journal/article/view/670; https://doi.org/10.15421/nvlvet6606

Based on years of research epizootic monitoring of Gangraena Emphysematosa in the world and in Ukraine it has been established that the infectious agent is of widespread distribution (in all continents except Antarctica). A wide and uneven spread of the disease in Ukraine territory, in its regions and administrative districts gives grounds to note the presence in certain regions of favorable conditions for the natural circulation of the pathogen and the lack of them in others. It is established that the formation of the dysfunctional territory affected by natural-geographical conditions, such as the density of the soil deposits, level of first aquifers, soil type, the intensity of melioration, and dysfunctional zones mainly located in the basins of the river and melioration systems, indicating the local distribution of Blackleg(disease) Gangraena emphysematosa (lat.). From the burial of farm deadstock ,in soil samples was allocated isolate of Sl. Chauvoei in well saved pelvic bones of dead animals, located at a depth of 140-160 cm, who has typical culture-biochemical and virulent properties. In our opinion, the long-term preservation of the viability of spores of Blackleg(disease) Gangraena emphysematosa (lat.) and its virulent abilities associated with the fact that reproduction of the pathogen Blackleg(disease) Gangraena emphysematosa(lat.) is impossible in burials located on the yellow clay layers, but for many years it retains its virulence properties. Found that isolates Cl. shauvoei isolated from soil on disadvantaged pastures effected by Blackleg(disease) Gangraena emphysematosa (lat.), significantly reduce their virulence properties, but not loses them completely, giving a reason to assume that the surface layers of soil pastures triggered another mechanism of preservation, which leads to lower its virulent properties. The role of each of these varieties in the «parasite – host» is not the same, and therefore the value of each of them in support of the epizootic process is not equivalent. На основании ...