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1 January 2002 In Vitro Antibiotic Susceptibility of Field Isolates of Mycoplasma synoviae in Argentina
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Abstract

Minimum inhibitory concentrations (MICs) were determined in vitro for 7 antibiotics (aivlosin, enrofloxacine, tylosin, tiamulin, kitasamycin, chlortetracycline, and oxytetracycline) against eight recent local Argentinean isolates and two standard strains of Mycoplasma synoviae. Aivlosin (3-acetyl-4"-isovaleryl tylosin tartrate), tylosin, and tiamulin showed the lowest MICs with MIC90s of 0.006, 0.012, and 0.05 µg/ml, respectively. Except one strain that showed resistant values to chlortetracycline (≥12.5 µg/ml), all the analyzed strains were susceptible in different degrees to all the antibiotics tested. In this study, the improved activity of the tylosin-derived drug, aivlosin, was confirmed because it showed, in most strains, MIC values half those for tylosin.

R. O. Cerdá, G. I. Giacoboni, J. A. Xavier, P. L. Sansalone, and M. F. Landoni "In Vitro Antibiotic Susceptibility of Field Isolates of Mycoplasma synoviae in Argentina," Avian Diseases 46(1), 215-218, (1 January 2002). https://doi.org/10.1637/0005-2086(2002)046[0215:IVASOF]2.0.CO;2
Received: 11 July 2001; Published: 1 January 2002
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