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Aust Vet J. 2001 Oct;79(10):703-6.

Survival of Mycobacterium avium subsp paratuberculosis in amitraz cattle dip fluid.

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1
New South Wales Agriculture, Elizabeth Macarthur Agricultural Institute, Camden.

Abstract

OBJECTIVE:

To determine the survival time of Mycobacterium avium subsp paratuberculosis in amitraz-based cattle dip fluid derived from an active dip site in northern New South Wales.

PROCEDURE:

Following inoculation of triplicate 5 L containers with faeces (0.5 g/L) from a clinical case of bovine paratuberculosis, samples collected up to 8 weeks after inoculation were examined by conventional and radiometric culture. M a paratuberculosis colonies were enumerated on solid media.

RESULTS AND CONCLUSIONS:

M a paratuberculosis survived in amitraz cattle dip fluid for up to 2 weeks, but not 3 weeks. Where 1% of solids in dip fluid is derived from a clinical case of paratuberculosis, dip fluid may contain viable M a paratuberculosis for at least 2 weeks. These findings have implications for the management of cattle dip sites.

PMID:
11712711
[Indexed for MEDLINE]
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