Short communication: quantification of the transmission of microorganisms to milk via dirt attached to the exterior of teats

M.M.M. Vissers, F. Driehuis, M.C.T. Giffel, P. de Jong, J.M.G. Lankveld

    Research output: Contribution to journalArticleAcademicpeer-review

    46 Citations (Scopus)

    Abstract

    Pathogens and spoilage microorganisms can be transmitted to milk via dirt (e.g., feces, bedding material, soil, or a combination of these) attached to the exterior of the cows¿ teats. To determine the relevance of this pathway and to perform quantitative microbial risk analysis of the microbial contamination of farm tank milk (FTM), it is important to know the amount of dirt transmitted to milk via the exterior of teats. In this study at 11 randomly selected Dutch farms the amount of dirt transmitted to milk via the exterior of teats is determined using spores of mesophilic aerobic bacteria as a marker for transmitted dirt. The amount of transmitted dirt to milk varied among farms from 3 to 300 mg/L, with an average of 59 mg/L. The usefulness of the data for microbial risk analyses is briefly illustrated using the contamination of FTM with spores of butyric acid bacteria as a case study. In a similar way the data can be used to identify measures to control the contamination of FTM with other microorganisms or chemical residues.
    Original languageEnglish
    Pages (from-to)3579-3582
    JournalJournal of Dairy Science
    Volume90
    Issue number8
    DOIs
    Publication statusPublished - 2007

    Keywords

    • butyric-acid bacteria
    • farm tank milk
    • raw-milk
    • risk-assessment
    • spores
    • contamination

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