Phenotypic distinction in Enterococcus faecium and Enterococcus faecalis strains between susceptibility and resistance to growth-enhancing antibiotics.

P Butaye; L A Devriese; F Haesebrouck

doi:10.1128/aac.43.10.2569

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Phenotypic distinction in Enterococcus faecium and Enterococcus faecalis strains between susceptibility and resistance to growth-enhancing antibiotics.

P Butaye·L A Devriese·F Haesebrouck

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Abstract

Susceptibility of Enterococcus faecium and Enterococcus faecalis strains from animals and foods to growth-promoting antibiotics used in animal feed was tested by the agar dilution technique. Acquired resistance to bacitracin, narasin, tylosin, and virginiamycin was seen for both species, and for E. faecium, resistance to avilamycin and avoparcin was also seen. Drawing the distinction between susceptibility and resistance based on frequency distributions of MICs was easy with avoparcin, avilamycin, and tylosin but difficult with virginiamycin and to some extent also with bacitracin and narasin.

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Animals Anti-Bacterial Agents Enterococcus faecalis Enterococcus faecium Food Microbiology Glycopeptides Microbial Sensitivity Tests Oligosaccharides Phenotype Pyrans Journal Article Research Support, Non-U.S. Gov't

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P Butaye, L A Devriese, F Haesebrouck. 1999. Phenotypic distinction in Enterococcus faecium and Enterococcus faecalis strains between susceptibility and resistance to growth-enhancing antibiotics.. https://doi.org/10.1128/aac.43.10.2569

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