Incidence and characterization of mastitic bovine milk antimicrobial multi-drug resistant bacteria in middle west region of São Paulo, Brazil

Authors

  • Gilberto Moreno Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Biociências, Departamento de Microbiologia e Imunologia, Botucatu, SP
  • Carlos Alberto de Magalhães Lopes Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Biociências, Departamento de Microbiologia e Imunologia, Botucatu, SP
  • Arnold Frederico Gottschalk Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SP
  • José Rafael Modolo Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SP

DOI:

https://doi.org/10.11606/issn.2318-3659.v34i4p207-210

Keywords:

Bacterial pathogens, Bovine mastitis, Drug resistance

Abstract

A study of the incidence and characterization of bacteria multi-drug resistance isolated from 750 milk samples of cows affected by subclinical mastitis in middle west region of São Paulo, Brazil, was carried out. Staphylococci (75.8%) (mainly represented by Staphylococcus aureus andStaphylococcus epidermidis) and Escherichia coli(7.1 % ) were most frequently isolated bacteria. Most milk samples yielded pure cultures, but associations of pathogens were found in some samples. In vitro multi-drug resistance to six antibiotics (penicillin, ampicillin, dicloxacillin, streptomycin, tetracycline and oxacillin), was observed only among Gram-negative isolates and in some Staphylococcus aureus (39.9%) strains. Remaining Gram positive bacteria, were all sensitive to drugs tested. Multi-drug resistance in mastitogenic bacteria remain a problem difficult to be solved or controlled, mainly by short term programmes.

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Published

1997-08-01

Issue

Vol. 34 No. 4 (1997)

Section

ANIMAL PATHOLOGY

License

The journal content is authorized under the Creative Commons  BY-NC-SA  license (summary of the license: https://creativecommons.org/licenses/by-nc-sa/4.0 | full text of the license: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode) 

How to Cite

1.
Moreno G, Lopes CA de M, Gottschalk AF, Modolo JR. Incidence and characterization of mastitic bovine milk antimicrobial multi-drug resistant bacteria in middle west region of São Paulo, Brazil. Braz. J. Vet. Res. Anim. Sci. [Internet]. 1997 Aug. 1 [cited 2024 Apr. 19];34(4):207-10. Available from: https://revistas.usp.br/bjvras/article/view/50295