Mortality in farmed mink: Systematic collection versus arbitrary submissions for diagnostic investigation

Erik Rattenborg, Hans-Henrik Dietz, T.H. Andersen, S.H. Møller

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    The distribution of diagnoses of mortality in mink submitted to the Danish Veterinary Laboratory (DVL) for diagnostic investigation in the calendar year 1997 was compared with the diagnoses of mortality in all dead mink collected at 4 selected farms (project farms) during the same period. A total of 1,015 submitted mink and 1,149 mink from the 4 project farms were subjected to post mortem investigation. The average size (breeding stock) of the project farms was larger than Danish farms on average. However, the distribution of colour types of the mink was comparable. The seasonal distribution of the material from project farms and that of the submissions were approximately the same. Differences in the distribution of diagnoses as well as recovered microorganisms were found however, mainly related to the proportion of gastro-intestinal disorders and E. coli respectively. These proportions were negatively correlated. Overall the results showed that extrapolating diagnostic results of laboratory submissions to the population of farmed mink may be problematic, and more reliable methods for disease surveillance must be considered.
    Original languageEnglish
    JournalActa Veterinaria Scandinavica (Print)
    Issue number4
    Pages (from-to)307-314
    Publication statusPublished - 1999


    • fur animals
    • pathology
    • proportional mortality
    • epidemiology
    • mortality rate
    • bias
    • microbiology


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