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  • Title: Recovery of a marker strain of Salmonella typhimurium in litter and aerosols from isolation rooms containing infected chickens.
    Author: Kwon YM, Woodward CL, Corrier DE, Byrd JA, Pillai SD, Ricke SC.
    Journal: J Environ Sci Health B; 2000 Jul; 35(4):517-25. PubMed ID: 10874627.
    Abstract:
    Screening of poultry flocks for foodborne pathogen Salmonella contamination is critical for Salmonella control in preharvest stages of poultry production. In this study, two sampling methods (litter and air filter) were compared for detection of S. typhimurium from experimentally infected chicks some of which had received either a probiotic competitive exclusion culture or transfer of cecal contents from salmonellae-free adult birds. At 4, 9, and 11 days after inoculation, S. typhimurium samples were enumerated by selective plating. For both types of sampling, the control birds yielded the greatest levels of environmental contamination followed by the samples from the probiotic inoculated birds with the birds receiving the cecal transfer culture having the lowest levels of contamination. Although the two sampling methods responded in a similar fashion, detection sensitivity needs to be increased for air filter sampling.
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