Hemolytic characteristics of Streptococcus isolated from clinical material from synanthropic rodents and birds living in farm animal facilities

Abstract

Results. In order to study the hemolytic activity of Streptococcus, α-, β- and γ-isolated from samples of clinical material from synanthropic birds and rodents, we studied 324 cultures of Streptococcus. In rats, mice and birds caught in livestock buildings in cultures of Streptococcus, α- and γ-types of hemolysis were mainly manifested, β-hemolysis was observed less frequently.To study the hemolytic properties of Streptococcus, we studied 140 cultures of Streptococcus isolated from the air, washings from walls and floors, as well as from feeders, in livestock buildings of the KabardinoBalkarian Republic. 50 cultures isolated from the air of cowsheds, sheds, stables and pigsties had α-hemolytic activity in 52,0% of cases, complete clarification of blood agar (β-hemolysis) caused 7 cultures and did not cause hemolysis in 17 cultures. 44 cultures of Streptococcus isolated from washings from walls and floors caused α-hemolysis in 40,9% of cases, β-hemolysis in 25,0% of cases and did not cause hemolysis in 34,1% of the studied cultures. 46 cultures isolated from feeder washes caused partial hemolysis in 17 cases, complete hemolysis in 6 cases, and no hemolysis in 23 cases.