National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Streptococcus dysgalactiae is a pyogenic species pathogenic both for animals and humans. It is an emerging pathogen classified as β haemolytic streptococci belonging to Lancefield group C and G. Present study was undertaken to isolate, identify and analyse the antibiogram of S. dysgalactiae isolates recovered from pigs. A total of 53 samples were collected from slaughtered pigs, out of which 35 isolates confirmed as Gram positive streptococci microscopically. Biochemically 31 isolates were identified as Streptococcus dysgalactiae subspequisimilis and 4 as group L Streptococci by using API STREP 20multitest kit identification system. PCR targeting 23S rDNA gene sequence which confirmed 31 isolates as Streptococcus dysgalactiae. Antibiogram of these isolates was done using 13 antibiotic discs for testing antimicrobial sensitivity using standard disc diffusion method. All the isolates were highly sensitive to β lactams followed by fluoroquinolones, tetracyclines, least susceptible to sulphonamides, aminoglycosides and were complete resistant to neomycin. Hence the study highlights the presence of emerging opportunistic pathogen S. dysgalactiae in pigs and its decreasing susceptibility towards aminoglycosides. This study is significant as microorganism Streptococcus dysgalactiae subsp equisimilis is an emerging pathogen in humans as well.
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