Isolation and molecular identification of Trueperella pyogenes, one of the main causes of cutaneous abscesss, in cattle

Authors

1 Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan

2 Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran

Abstract

Backgrounds: Trueperella pyogenes is one of the most important pathogens of cattle cutaneous abscess which can cause many economic damages in livestock’s industry. Objectives: The aim of this study is to investigate on T.pyogenes as an opportunistic pathogen in vast ranges of domestic and wild animals. Methods and materials: 134 samples were collected from 15 cattle farms in Tehran’s province. The pathogens bacteria were isolated and were identified initially by their colony morphology and biochemical characteristics. In addition, using routine biochemical techniques and Molecular tests for detection of T. pyogenes strains. Susceptibility of T. pyogenes strains to antibiotics was evaluated using the disk diffusion method. Results: The bacterial species isolated from 314 cutaneous abscess studied were 10 geniuses of pathogen bacteria. T. pyogenes was the pioneer pathogen among other these. According to biochemical and CAMP test, nine biotypes of T. pyogenes is detected. All T. pyogenes isolates (9 biotypes) were positive for the PCR test. The highest percentage of T. pyogenes isolates was susceptible to ampicillin, penicillin G and amoxicillin and high resistance rates were observed for trimethoprim-sulfamethoxazole, erythromycin and tetracycline. Conclusions: Although T. pyogenes is considered normal floral bacteria in varied organs in domestic animals, it could turn into a primary and secondary pathogen and consequently cause several complications. Nevertheless, the synergistic effect between T. pyogenes and other bacteria should also be accounted for.in addition, the economic losses of this pathogen and zoonotic concerns in immunosuppressive patients are very important.

Keywords

References

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Journal of Veterinary Research
Volume 72, Issue 4 - Serial Number 4
December 2017
Pages 499-536

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