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

How to Cite

Moreno, G., Lopes, C. A. de M., Gottschalk, A. F., & Modolo, J. R. (1997). Incidence and characterization of mastitic bovine milk antimicrobial multi-drug resistant bacteria in middle west region of São Paulo, Brazil. Brazilian Journal of Veterinary Research and Animal Science, 34(4), 207-210. https://doi.org/10.11606/issn.2318-3659.v34i4p207-210

Issue

Section

ANIMAL PATHOLOGY

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