Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 370260
Title Short communication: quantification of the transmission of microorganisms to milk via dirt attached to the exterior of teats
Author(s) Vissers, M.M.M.; Driehuis, F.; Giffel, M.C.T.; Jong, P. de; Lankveld, J.M.G.
Source Journal of Dairy Science 90 (2007)8. - ISSN 0022-0302 - p. 3579 - 3582.
Department(s) Product Design and Quality Management Group
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) butyric-acid bacteria - farm tank milk - raw-milk - risk-assessment - spores - contamination
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.
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