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The recovery of small numbers of Staphylococcus aureus infused into the bovine teat cistern

Published online by Cambridge University Press:  01 June 2009

F. H. S. Newbould  and
F. K. Neave
F. H. S. Newbould
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
F. K. Neave
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
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Summary

Small volumes of milk each containing an average of less than 10 colonyforming units of Staphylococcus aureus were injected into the teat cisterns of 39 quarters of 10 cows.

Typical staphylococci were recovered from only 14 quarters following overnight incubation of milk stripped manually from each quarter 10 min after injection. There was an inverse relationship between the total leucocyte count of the milk taken from the quarter before infusion and recovery of staphylococci.

From 4 of 8 quarters from which Staph. aureus could not be recovered by enrichment it was possible to recover the organism by centrifuging the milk and culturing the deposit of leucocytes and bacteria.

It is suggested that release of ingested staphylococci from defunct phagocytes may be important in initiation of infection, failure of antibiotic therapy and recurrence of infection.

Type
Original Articles
Information
Journal of Dairy Research , Volume 32 , Issue 2 , June 1965 , pp. 157 - 162
Copyright
Copyright © Proprietors of Journal of Dairy Research 1965

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References

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