Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-19T06:48:32.676Z Has data issue: false hasContentIssue false
  • English
  • Français

Activity and energy expenditure in laying hens: 3. The energy cost of eating and posture

Published online by Cambridge University Press:  27 March 2009

M. Van Kampen
M. Van Kampen
Affiliation:
Laboratory for Veterinary Physiology, Alex. Numankade 93, The Utrecht, The Netherlands
Get access Rights & Permissions [Opens in a new window]

Summary

The influence of standing, spontaneous activity and eating on heat production was determined.

The extra heat production of standing is negatively correlated with the length of standing period. In a short standing period of 30 min the associated activity, pecking against the respirometer wall and fluffing the feathers, was high and the heat production was increased by 25% compared with that during sitting. After standing for 1½ h spontaneous activity was very low and the difference in heat production between the standing and sitting bird was reduced by 9%.

During eating the heat production increased by an average of 37% (range 11–68%); this was due mainly to the act of eating per se and not to the work of digestion.

The mean energy cost of eating was calculated to be 143 J/kg0·75/min spent eating.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 87 , Issue 1 , August 1976 , pp. 85 - 88
Copyright
Copyright © Cambridge University Press 1976

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

Abdou, F. H., Abdellatif, M., Abou-Ashour, A. M. & Kandil, A. B. (1973). Some diurnal rhythms in the activity of the fowl. Archiv für Geflügelkunde 37, 180–6.Google Scholar
Benedict, F. G. & Emmes, L. E. (1912). The influence upon metabolism of non-oxidizable material in the intestinal tract. American Journal of Physiology 30, 197–216.Google Scholar
Benedict, F. G. & Pratt, J. H. (1913). The metabolism after meat feeding of dogs in which pancreatic external secretion was absent. Journal of Biological Chemistry 15, 1–35.CrossRefGoogle Scholar
Blaxter, K. L. (1973). Adjustments of the metabolism of the sheep to confinement. In Energy Metabolism of Farm Animals (ed. Menke, K. H., Lantzsch, H. J. and Reichl, J. R.), pp. 115–18. Stuttgart: Universität Hohenheim, Dokumentationsstelle.Google Scholar
Deighton, T. & Hutchinson, J. C. D. (1940). Studies on the metabolism of fowls. Journal of Agricultural Science, Cambridge 31, 151–7.Google Scholar
Deshazer, J. A. (1967). Heat loss variations of the laying hen. Ph.D. thesis. Department of Biological and Agricultural Engineering. Raleigh.Google Scholar
Romijn, C. & Vreugdenhil, E. L. (1969). Energy balance and heat regulation in the White Leghorn fowl. Netherlands Journal of Veterinary Science 2, 32–58.Google Scholar
Van Kampen, M. & Romijn, C. (1970). Energy balance and heat regulation in the White Leghorn fowl. In Energy metabolism of farm animals (ed. Schürch, A. and Wenk, C.), pp. 213–16. Zürich: Juris Druck Verlag.Google Scholar
Van Kampen, M. (1973). Energy metabolism and heat regulation in the White Leghorn Hen. Thesis, State University of Utrecht.Google Scholar
Van Kampen, M. (1974). Physical factors affecting energy expenditure. In Energy requirements of Poultry (ed. Morris, T. R. and Freeman, B. M.), pp. 47–59. Edinburgh: British Poultry Science Ltd.Google Scholar
Young, B. A. (1966). Energy expenditure and respiratory activity of sheep during feeding. Australian Journal of Agricultural Research 17, 355–62.Google Scholar