Abstract
Salmonellosis and brucellosis have caused a considerable danger of farmed animals and economic loss in animal farming industry. In this study, the disinfection efficacy of Citra-Kill<TEX>$^{(R)}$</TEX>, a commercial disinfectant, composed to quaternary ammonium chloride and citric acid was evaluated against S. typhimurium and Brucella ovis. A bactericidal efficacy test by broth dilution method was used to determine the lowest effective dilution of the disinfectant following exposure to test bacteria for 30 min at <TEX>$4^{\circ}C$</TEX>. Citra-Kill<TEX>$^{(R)}$</TEX> and test bacteria were diluted with distilled water (DW), hard water (HW) or organic matter suspension (OM) according to treatment condition. On OM condition, the bactericidal activity of Citra-Kill<TEX>$^{(R)}$</TEX> against S. typhimurium and Brucella ovis was lowered compared to that on HW condition. As Citra-Kill<TEX>$^{(R)}$</TEX> possesses bactericidal efficacy against animal pathogenic bacteria such as S. typhimurium and Brucella ovis, this disinfectant solution can be used to control the spread of animal bacterial diseases.
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