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407. The number of sweat glands in the helix of the cow's ear and the milk yield

Published online by Cambridge University Press:  01 June 2009

J. D. Findlay ,
A. Myfanwy Goodall  and
S. H. Yang
J. D. Findlay
Affiliation:
The Hannah Dairy Research Institute, Kirkhill, Ayr
A. Myfanwy Goodall
Affiliation:
The Hannah Dairy Research Institute, Kirkhill, Ayr
S. H. Yang
Affiliation:
The Hannah Dairy Research Institute, Kirkhill, Ayr
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Extract

1. A study has been made of the distribution of the so-called sweat glands in the ears of Ayrshire cattle.

2. The number of sweat glands per unit area of skin in the ear was found to vary greatly from one part of the ear to another and did not appear to be related to the milk yield. It is concluded that it is impossible to use the sweat-gland count in the ear as an indication of the milk-producing capacity of Ayrshire cattle.

3. The number of sweat glands per unit area in the ear of the very young calf was found to be greater than in the fully grown cow, the number being roughly inversely proportional to the surface area of the ear.

4. These findings for Ayrshire cattle are contrary to those published by a number of other workers for cattle of the Red German breed, who claim that any portion of the ear can be used to obtain a sweat-gland count which is closely correlated with milk yield.

Type
Original Articles
Information
Journal of Dairy Research , Volume 17 , Issue 1 , February 1950 , pp. 22 - 36
Copyright
Copyright © Proprietors of Journal of Dairy Research 1950

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References

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