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Estimation of heat production from heart-rate measurements in cattle

Published online by Cambridge University Press:  09 March 2007

S. Yamamoto ,
J. A. McLean  and
A. J. Downie
S. Yamamoto
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, Scotland
J. A. McLean
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, Scotland
A. J. Downie
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, Scotland
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Abstract

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1. Heat production and heart rate of seven steers were measured simultaneously using either a calori- metric chamber or head-cage.

2. The relationship between heat production and heart rate for each animal was best described by linear regression.

3. Differences between individual animals made separate ‘calibration equations’ necessary for each animal.

4. Accuracy of prediction of heat production from heart rate was better than ±10% in all instances.

5. It is concluded that frequent measurement of heart rate appears to offer a practical method for esti- mation of heat production of free-range animals.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 42 , Issue 3 , November 1979 , pp. 507 - 513
Copyright
Copyright © The Nutrition Society 1979

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