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The aim of this investigation was to establish the presence and prevalence of   streptococci, enterococci and streptococci-like bacteria in various materials   originating from healthy, slaughtered and dead pigs belonging to different   categories from several farms and slaughterhouses in the Republic of Serbia.   The total number of investigated samples comprised 226 swabs of tonsils and   noses from clinically healthy breeders, swabs of tonsils from piglets 5-20   days old, parts of nasopharyngeal tonsils from breeders slaughtered in a   slaughterhouse, parts of nasopharyngeal tonsils from piglets slaughtered in a   slaughterhouse, swabs of slaughtered pig carcasses from a slaughterhouse,   swabs from knives for evisceration in a slaughterhouse, as well as swabs of   lungs, abdominal cavity and organs from piglets which died suddenly. The   standard microbiological methods were used for investigations of the presence   of the listed microorganisms. Commercial biochemical tests were used for the   identification of the isolated bacteria and specific sera for capsular   antigenes were used for serological determination of the isolated S. suis   strains. It was established that the great majority of the isolated strains   belonged to the genus Streptococcus (36) (75%), and the minority of the   strains belonged to the following genera: Enterococcus (6) (10.4%),   Aerococcus (3) (6.2%), Lactococcus (2) (4.2%) and Globicatella (2) (4.2%).   The great majority of Streptococcus species belonged to S. suis. The presence   of other á haemolytic streptococci was established in the swabs of   nasopharyngeal tonsils: Streptococcus sanguinis (13.8%), Streptococcus   salivarius (5.6%), Streptococcus mitis (5.6%), Streptococcus parasanguinis   (2.7%) and Streptococcus oralis (2.7%). Also, S. bovis was isolated in a   smaller percentage (5.6%). The greatest number of isolated bacteria from the   genus Enterococcus belonged to Enterococcus faecalis (80%), while the   minority of isolated strains belonged to Enterococcus faecium (20%). The   following from the streptococci-like bacteria were isolated: Aerococcus   viridans, Globicatella sanguinis and Lactococcus lactis ssp.cremoris

Investigation of presence of α haemolytic streptococci, enterococci and streptococci-like bacteria in different materials originating from pigs