MOLECULAR-PHYLOGENETIC CHARACTERIZATION AND ANTIMICROBIAL RESISTANCE OF Escherichia coli ISOLATED FROM GOATS WITH DIARRHEA
DOI:
https://doi.org/10.1590/cab.v16i4.33639Keywords:
ParasithologyAbstract
Neonatal diarrhea determines significant changes in feed conversion, causing productivity loss in caprine herds. The antimicrobial resistance in bacteria is characterized as an important public healthissue; therefore, Escherichia coli may be characterized as an important pathogen due to expressingvirulence mechanisms responsible for significant clinical conditions in humans and animals. Thepresent study evaluated the presence of E. coli among 117 caprine fecal samples and analyzed theisolates for antimicrobial resistance. Suggestive colonies were submitted to biochemical screeningfollowed by genotypic group determination and phylogenetic analysis; further, the sampleswere submitted to antimicrobials susceptibility test. E. coli, Salmonella spp, Shigella sonnei andEnterobacter aerogenes were identified. E. coli isolates were phylogenetically classified as B2 (9/39),D (19/39), B1 (7/39) e A (4/29) groups. The analysis of the isolates also revealed the presence of K99(04/39) and Stx (02/39) virulence factors. Antimicrobial susceptibility test revealed sensitive isolatesto Chloramphenicol, Streptomycin, Amoxicillin and Ciprofloxacin, being all resistant to Lincomycin,Vancomycin and Penicillin. The results support the need of establishing restricted protocols forantimicrobial use, a fundamental procedure for health improvement in Brazilian caprine herds.
Keywords: antibiotics; bacteria; caprine; E. Coli.
Downloads
Published
How to Cite
Issue
Section
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g. in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).