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Pig Journal Volume: 60
Publication date: December 2007

Research Papers

EFFICACY OF SOME DISINFECTANT COMPOUNDS AGAINST PORCINE BACTERIAL PATHOGENS
J.R. Thomson, N.A. Bell and M. Rafferty

Abstract
Seven chemical disinfectants were tested against 10 species of porcine bacterial pathogens that are common in UK pig units, using the British Standard method BS EN 1656:2000. A range of temperature conditions, two contact times and two levels of organic soiling were included. The bacterial pathogens showed widely different susceptibilities to the different disinfectants and none of the compounds was universally effective. Salmonella enterica Typhimurium, Salmonella derby, E.coli (Abbotstown strain) and Yersinia enterocolitica generally showed poor susceptibility to disinfectants whereas Brachyspira hyodysenteriae, Actinobacillus pleuropneumoniae, Bordetella bronchiseptica, Pasteurella multocida, Haemophilus parasuis, Streptococcus suis and Staphylococcus hyicus were all susceptible to multiple disinfectants under low organic matter conditions. Under high organic matter conditions, the efficacy of disinfectant compounds was markedly reduced in most tests. Low temperature and short contact times adversely affected results in some tests.

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