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185. The incidence of mastitis in cows yielding milk low in solids-not-fat

Published online by Cambridge University Press:  01 June 2009

A. S. Foot  and
P. M. F. Shattock
A. S. Foot
Affiliation:
National Institute for Research in Dairying, University of Reading
P. M. F. Shattock
Affiliation:
National Institute for Research in Dairying, University of Reading
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Extract

1. In a field investigation covering twenty-nine herds, an average of 19·5% of the animals in milk during the first three months of 1937 were yielding milk low in solids-not-fat, estimated by the routine method, at two consecutive milkings.

2. Of the low solids-not-fat cows which were not stale, evidence of mastitis infection was found in an average of 61·5% of cases. Re-examination of some negative animals suggests that the total infection amounted to about 70%.

3. There were apparently at least twice as many “subclinical” cases of mastitis as clinical cases.

Type
Original Articles
Information
Journal of Dairy Research , Volume 9 , Issue 2 , May 1938 , pp. 166 - 173
Copyright
Copyright © Proprietors of Journal of Dairy Research 1938

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References

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