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212. Studies in mastitis. IV. Mastitis in relation to the methylene blue reduction test

Published online by Cambridge University Press:  01 June 2009

J. McClemont  and
J. G. Davis
J. McClemont
Affiliation:
National Institute for Research in Dairying, University of Reading
J. G. Davis
Affiliation:
National Institute for Research in Dairying, University of Reading
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Extract

The adoption of the methylene blue test as an official method of grading milk in England makes this subject one of considerable importance. The predominating factor in this, as in other tests, is the condition of storage (time and temperature) of the sample. If mastitis affects the methylene blue reduction time of milk the factors responsible may be any or all of the following:

(1) The mastitis organisms themselves.

(2) Other organisms present (secondary invaders).

(3) Body cells, e.g. the so-called leucocytes of milk and also blood cells.

(4) Chemical changes in the milk as the result of the mastitis.

A related aspect is the value of the methylene blue test on single cow or quarter samples as a test for mastitis.

Type
Original Articles
Information
Journal of Dairy Research , Volume 10 , Issue 1 , January 1939 , pp. 88 - 93
Copyright
Copyright © Proprietors of Journal of Dairy Research 1939

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References

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