Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-06T14:18:27.172Z Has data issue: false hasContentIssue false
  • English
  • Français

The effect of milk given at various temperatures on the oxygen consumption of young calves

Published online by Cambridge University Press:  02 September 2010

C. W. Holmes
C. W. Holmes
Affiliation:
Massey University, Palmerston North, New Zealand
Get access

Summary

1. Measurements of oxygen consumption and rectal temperature were made on young female calves at air temperatures of 9° and 20°C, before and after 4·5 kg milk was drunk at 23° and 39°C.

2. When cool milk (23°C) was drunk at an air temperature of 9°C, vigorous shivering occurred, and during the 2-hr period after feeding, oxygen consumption was significantly higher than in the three other treatments.

3. In all other treatments oxygen consumption increased considerably during the 30-min period which included drinking activity; the average increment, when no thermo-regulatory shivering occurred, was 1·9 ml O2 min−1kg−1.

4. It was estimated that the 58 kcal ‘heat of warming’ required by milk at 23°C drunk at an air temperature of 9°C could be accounted for by the increment in heat production during the 2 hr after feeding and the fall in rectal temperature of 0-2-0-3°C which persisted after feeding in this treatment. These calculations suggested that the effect of a cool liquid on the energy balance of an animal would be less than that predicted from the ‘heat of warming’ required by the cool liquid.

Type
Research Article
Information
Animal Production , Volume 13 , Issue 4 , November 1971 , pp. 619 - 625
Copyright
Copyright © British Society of Animal Science 1971

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Gridgeman, N. T. and Heroux, O. 1965. Relation of oxygen uptake to body weight of rats at different environmental temperatures. Can. J. Physiol. Pharmacol. 43: 351–357.CrossRefGoogle ScholarPubMed
Leroy, A. M. 1962. Analysis of the origin of the heat loss of pigs fed normally. In Energy Metabolism, pp. 37–47. Academic Press, London.Google Scholar
Ling, E. R. 1944. Textbook of Dairy Chemistry. Chapman and Hall, London.Google Scholar
Holmes, C. W. 1970a. Some thermal effects on the pig of the ingestion of liquid feed at various temperatures. Anim. Prod. 12: 485–492.Google Scholar
Holmes, C. W. 1970b. Effects of air temperature on body temperatures and sensible heat loss of Friesian and Jersey calves at 12 and 76 days of age. Anim. Prod. 12: 493–501.Google Scholar
Holmes, C. W. 1971. Growth of pigs fed cool whey at two ambient temperatures. Anim. Prod: 13: 1–6.Google Scholar
Munford, R. E. 1968. The infra-red milk analyser, pp. 35–39. Dairy Farming Annual, Massey University.Google Scholar
Snedecor, G. W. 1967. Statistical Methods, 6th ed.Iowa State College Press, Ames, la.Google Scholar
Tayler, J. C. and Lonsdale, C. R. 1969. The artificial rearing of calves and their growth on grass diets. J. agric. Sci., Camb. 73: 279–289.CrossRefGoogle Scholar
Webster, A. J. F. and Hays, F. L. 1968. Effects of beta adrenergic blockade on the heart rate and energy expenditure of sheep during feeding and during acute cold exposure. Can. J. Physiol. Pharmacol. 46: 577–583.CrossRefGoogle ScholarPubMed
Webster, A. J. F. and Hicks, A. M. 1967. Respiration apparatus for the determination of the energy expenditure of livestock in cold environments. Can. J. Anim. Sci. 48: 89–92.CrossRefGoogle Scholar