Porcine Health Management

Table 2 Potency and breakpoints used for the microdilution methods for colistin and gentamicin

From: Antimicrobial resistance profile and prevalence of extended-spectrum beta-lactamases (ESBL), AmpC beta-lactamases and colistin resistance (mcr) genes in Escherichia coli from swine between 1999 and 2018

Antibiotic^a	Potency (μg/mg)	Breakpoint (μg/mL)		Reference^b
Antibiotic^a	Potency (μg/mg)	S	R	Reference^b
Colistin	731.93	≤ 2	> 2	CLSI M100; human [5]
Gentamicin	614	≤ 2	≥ 8	CLSI VET08; dog, horse [6]

^aAntibiotic powder: Sigma®. ^bCLSI veterinary breakpoints were preferably used. If not available, CLSI human breakpoints were used

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ISSN: 2055-5660

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