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The effect of increased air movement on the heat production and emission of steers

Published online by Cambridge University Press:  27 March 2009

K. L. Blaxter  and
F. W. Wainman
K. L. Blaxter
Affiliation:
The Hannah Dairy Research Institute, Ayr
F. W. Wainman
Affiliation:
The Hannah Dairy Research Institute, Ayr
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Extract

1. Four steers were used in thirty-five experiments each lasting 4–5 days in which the effects of variation in air velocity from 0·4 to 1·6 m.p.h. at environmental temperatures of 0°, 10° and 20°C. on heat production were studied using a respiration chamber. Measurements were made on animals with winter coats and in the same animals after shearing.

2. Standing time was increased by exposure to cold and slightly reduced by exposure to wind. The wind was so small that it had no effect on the measured coat depth. Piloerection increased winter coat depth by 30%. Heat production was increased by 17–20 kcal./hr. on standing.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 62 , Issue 2 , April 1964 , pp. 207 - 214
Copyright
Copyright © Cambridge University Press 1964

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References

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