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Risk factors associated with the antimicrobial resistance of Staphylococcus aureus isolated from bovine mastitis
- Source :
- Pesquisa Veterinária Brasileira, Vol 34, Iss 10, Pp 947-952 (2014), Pesquisa Veterinária Brasileira, Vol 34, Iss 10, Pp 947-952
- Publication Year :
- 2014
- Publisher :
- Colégio Brasileiro de Patologia Animal (CBPA), 2014.
-
Abstract
- The objective of this study was to evaluate herd management practices and mastitis treatment procedures as risk factors associated with Staphylococcus aureus antimicrobial resistance. For this study, 13 herds were selected to participate in the study to evaluate the association between their management practices and mastitis treatment procedures and in vitro antimicrobial susceptibility. A total of 1069 composite milk samples were collected aseptically from the selected cows in four different periods over two years. The samples were used for microbiological culturing of S. aureus isolates and evaluation of their antimicrobial susceptibility. A total of 756 samples (70.7%) were culture-positive, and S. aureus comprised 27.77% (n=210) of the isolates. The S. aureus isolates were tested using the disk-diffusion susceptibility assay with the following antimicrobials: ampicillin 10mg; clindamycin 2μg; penicillin 1mg; ceftiofur 30μg; gentamicin 10mg; sulfa-trimethoprim 25μg; enrofloxacin 5μg; sulfonamide 300μg; tetracycline 30μg; oxacillin 1mg; cephalothin 30μg and erythromycin 5μg. The variables that were significantly associated with S. aureus resistance were as follows: the treatment of clinical mastitis for ampicillin (OR=2.18), dry cow treatment for enrofloxacin (OR=2.11) and not sending milk samples for microbiological culture and susceptibility tests, for ampicillin (OR=2.57) and penicillin (OR=4.69). In conclusion, the identification of risk factors for S. aureus resistance against various mastitis antimicrobials is an important information that may help in practical recommendations for prudent use of antimicrobial in milk production.
- Subjects :
- resistência antimicrobiana
Staphylococcus aureus
medicine.disease_cause
mastitis
Microbiology
Antibiotic resistance
Ampicillin
mastite bovina
medicine
Enrofloxacin
management practices
antimicrobial resistance
tratamento
in vitro susceptibility
lcsh:Veterinary medicine
General Veterinary
treatment
Fatores de risco
business.industry
Clindamycin
medicine.disease
Antimicrobial
práticas de manejo
Mastitis
Penicillin
Risk factors
in vitro susceptibilidade
lcsh:SF600-1100
business
medicine.drug
Subjects
Details
- Language :
- English
- ISSN :
- 16785150
- Volume :
- 34
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Pesquisa Veterinária Brasileira
- Accession number :
- edsair.doi.dedup.....5cd6b1771d8e0b72d045eb0b17e3bb74