AI Article Synopsis
- * Researchers collected 174 samples from various livestock (chickens, swine, cattle, and sheep) and assessed their antibiotic susceptibility using specific lab techniques.
- * Results indicated a very high prevalence of enterococci (>90% in all types of livestock) and significant resistance to multiple antibiotics, suggesting these animals may be key reservoirs of antibiotic resistance.
Article Abstract
Background And Aim: The emergence of antibiotic resistance is a major problem worldwide. Antibiotics are often used to prevent or treat infections in livestock. This study aimed to investigate antibiotic resistance in enterococci in Gabonese livestock.
Materials And Methods: We collected 174 animal samples (46 laying hens, 24 swine, 62 cattle, and 42 sheep) from farms in four provinces of Gabon. Bacterial strains belonging to the genus were obtained using selective media and polymerase chain reaction targeting the gene. Antibiotic susceptibility was determined by the disk diffusion method on Mueller-Hinton agar.
Results: Enterococci were present in 160 of the samples (97%), distributed as follows: laying hens (100%, 41/41), swine (100%, 22/22), small ruminants (88%, 37/42), and cattle (100%, 60/60). Resistance to cephalothin/cephalexin, streptomycin, and rifampicin (RIF) was high, and resistance to vancomycin (VAN), erythromycin, and tetracycline was moderate. A high diversity of resistance was found in Haut-Ogooué and Estuaire provinces. Laying hens and swine showed moderate levels of resistance to ciprofloxacin and penicillin, while sheep and cattle had high levels of resistance to RIF. All species showed a high level of resistance to VAN. We found various patterns of multiple resistances in the isolates, and the multiple resistance indexes ranged from 0.2 to 0.8.
Conclusion: This study shows that livestock in Gabon can be considered potential reservoirs of resistance.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9047121 | PMC |
| http://dx.doi.org/10.14202/vetworld.2022.714-721 | DOI Listing |
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