Bactericidal Effects of Disinfectants on Yersinia ruckeri

Abstract

Enteric redmouth disease caused by Yersinia ruckeri, is one of the most important aquaculture diseases worldwide. In this study, the effects of 11 disinfectants on Y. ruckeri ATCC29473 (2.8 × 10⁸ CFU/mL) and Y. ruckeri FPC1215 (2.9 × 10⁸ CFU/mL), were examined at 20°C. Nine disinfectants exhibited minimum bactericidal concentrations against both strains after 30 s exposure: 40% ethanol, 30% isopropanol, 4 mg/L povidone iodine, 1.25 mg/L sodium hypochlorite, 1:15,000 Rontect^®, 1:3,840 Acecide^®, 1:100 Hibiten^®, 1:1,000 Osuban^® and 1:1,000 Hyamine^®. However, no disinfection effects were observed for Saponated cresol solution^® or Pyceze^®.