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Effect of teat skin disinfection on the rate of infection and interval to infection in cows exposed to high levels of Staphylococcus aureus

Published online by Cambridge University Press:  01 June 2009

Richard F. Sheldrake  and
Roderic J. T. Hoare
Richard F. Sheldrake
Affiliation:
New South Wales Department of Agriculture, Veterinary Research Station, Glenfield, New South Wales 2167, Australia
Roderic J. T. Hoare
Affiliation:
New South Wales Department of Agriculture, Veterinary Research Station, Glenfield, New South Wales 2167, Australia
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Summary

All teats of a herd of lactating cows were contaminated after each milking with Staphylococcus aureus. Two teats of each cow were subsequently dipped in an iodine solution, while the remaining 2 teats were not dipped. For cows with a single infection the interval to infection in dipped and undipped quarters was 64 and 60 d respectively, while for the first infected quarter of cows with multiple infections the interval to infection in dipped and undipped quarters was 50 and 39 d respectively. For the second quarter infected in cows with multiple infections, the period between the first and second infection was 21 and 12 d for dipped and undipped quarters respectively. It is suggested that while teat skin disinfection was effective in reducing the rate of new infection, it had little effect on the process of infection in those quarters becoming infected. The occurrence of an infection in one quarter doubled the rate of infection in the other quarters.

Type
Original Articles
Information
Journal of Dairy Research , Volume 48 , Issue 1 , February 1981 , pp. 1 - 5
Copyright
Copyright © Proprietors of Journal of Dairy Research 1981

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