Abstract
The aim of this study was to investigate the presence of tonsillitis in dogs and isolation of bacteria involved as well as their antimicrobial susceptibility. For this purpose from June 2015 to August 2017, 12 clinical cases of dogs with tonsillitis have been examined, and a total of 24 samples were collected. Diagnosis was based on anamnesis, clinical signs, haematology and biochemical tests and bacteriological analyses. The isolation and identification of bacteria was carried out according to conventional microbiological methods and biochemical tests, while the antimicrobial susceptibility of bacterial isolates was tested using the disk diffusion method. Escherichia coli was the most commonly isolated bacteria with isolation rate 35.0%, followed by Streptococcus pyogenes (27.50%), Staphylococcus aureus (20%), Staphylococcus intermedius (10%) and Pasteurella spp. (7.5%). A high resistance to ampicillin, streptomicin and penicillin G was shown by E. coli, S. intermedius, S. pyogenes isolates. None of S. pyogenes, S. aureus, S. intermedius and Pasteurella spp., isolates was resistant to amoxicillin/clavulanic acid.
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