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Definition of culture and museum biotype field isolate F. necrophorum and selection of strains for the production of vaccines against necrobacteriosis
The article describes the analysis of the results of studies on the typing of museum cultures and field isolates of F. necrophorum, isolated from animals that died with clinical signs necrobacteriosis. Since the selection of pathogen biotypes necrobacteriosis for designing vaccines is a very important place of laboratory strains of F. necrophorum. The main characteristics attributed differentsionnym study fuzobakterii hemolytic properties on blood MPA. Investigated the properties of cultures sedimentativnye fuzobakterii with growth in liquid medium; gemagglyutatsionnye properties relative deposition chicken erythrocytes and pathogenic properties of existing pathogens. Given the above-mentioned properties of cultures F. necrophorum, matched by highly virulent strains of biotypes A and AB to produce vaccines necrobacteriosis.
Key words: biotype F. necrophorum, vaccine, sedimentation, hemolysis, haemagglutination, virulence, pathogenicity.
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