Shrimp Antimicrobial Testing. I. In Vitro Susceptibility of Thirteen Gram-Negative Bacteria to Twelve Antimicrobials

Abstract
Standard minimum inhibitory concentration (MIC) studies were conducted in vitro on eleven prospective antimicrobials and one reference antimicrobial. The compounds were tested against a standardized battery of 13 gram-negative bacterial isolates associated with shrimp disease. Two additional bacterial organisms not associated with shrimp, Escherichia coli and Pseudomonas aeruginosa, were also tested as system controls. The compounds tested were chloramphenicol (reference), enrofloxacin, erythromycin, florfenicol, oxytetracycline, paromomycin, four experimental fluoroquinolines (PD124816, PD127391, PD131628, PD132133), Romet-30®, and Sarafin®. All compounds, with the possible exception of paromomycin, had significantly better overall MIC ranges than did chloramphenicol.

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