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The adaptation of energy utilization in the laying hen to warm and cool ambient temperatures

Published online by Cambridge University Press:  27 March 2009

R. H. Davis ,
O. E. M. Hassan  and
A. H. Sykes
R. H. Davis
Affiliation:
Wye College(University of London), Wye, Ashford, Kent
O. E. M. Hassan
Affiliation:
Wye College(University of London), Wye, Ashford, Kent
A. H. Sykes
Affiliation:
Wye College(University of London), Wye, Ashford, Kent
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Summary

Two experiments have been performed to study the acclimatization of laying hens to cool or warm environmental temperature, using the comparative slaughter procedure to measure energy utilization. In the first experiment the energy balances over a 3-week period at either 10 or 35 °C were compared; in the second experiment a comparison was made of the energy balances over six consecutive weekly periods at similar cool and warm temperatures.

The first experiment confirmed that production could be maintained (88%) in the warm environment even though food intake was markedly reduced (95 and 63 g/day at 10 and 35 °C respectively). In both environments a loss of body weight indicated, that energy intake was insufficient to meet demands for at least part of the period.

During the first week of the second experiment there was a small loss of body weight in the cool environment and food consumption was slightly depressed. The results for energy intake, egg production and heat production suggest that acclimatization was complete after 1 week. In the warm environment egg production fell initially (62%) but returned to a high level (86%) during the second week. However, energy intake, body weight and heat production did not reach steady levels until the fourth week. Comparing the first 3 weeks with the subsequent 3 weeks the daily ME consumption was 137 and 161 kcal/kg¾ and the daily heat production was 126 and 116 kcal/kg¾. Similar, although less marked differences were observed in the cool environment. These results therefore emphasize the need to allow adequate time for acclimatization to the environment in studies of energy metabolism.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 79 , Issue 2 , October 1972 , pp. 363 - 369
Copyright
Copyright © Cambridge University Press 1972

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References

Bolton, W. (1959). The efficiency of food utilization for egg production by pullets and yearling hens. J. agric. Sci., Camb. 52, 364–68.CrossRefGoogle Scholar
Bray, D. J. & Gessell, J. A. (1961). Studies with oorn-soya laying diets. 4. Environmental temperature – a factor affecting performance of pullets fed diets suboptimal in protein. Poult. Sci. 40, 1328–35.CrossRefGoogle Scholar
Brown, W. O., Waring, J. J. & Addison, R. F. (1967). The utilization of energy by the laying hen. In Progress in livestock nutrition, pp. 77–95. London: U.S. Feed Groins Council.Google Scholar
Campos, A. C., Wilcox, F. H. & Shaffner, C. S. (1960). The influence of fast and slow rises in ambient temperature on production traits and mortality of laying pullets. Poult. Sci. 39, 119–29.CrossRefGoogle Scholar
Mowbray, R. M. & Sykes, A. H. (1971). Egg production in warm environmental temperatures. Br. Poult. Sci. 12, 25–29.CrossRefGoogle Scholar
N.R.C. (1966). Nutrient Requirements of Poultry. Pub. No. 1345. Washington, D.C.: National Academy of Sciences, National Research Counoil.Google Scholar
Payne, C. G. (1966a). Environmental temperature and egg production. In The Physiology of the Domestic Fowl. pp. 235–241 (Horton-Smith, C. & Amoroso, E. C., editors). Edinburgh and London: Oliver and Boyd.Google Scholar
Payne, C. G. (1966b). Environmental temperature and the performance of light breed pullets. Proc. 13th World's Poultry Congress, Kiev, pp. 480–85.Google Scholar
Romijn, C. ' Vreugdenhil, E. L. (1969). Energy balance and heat regulation in the White Leghorn fowl. Neth. J. vet. Sci. 2, 32–58.Google Scholar
Shannon, D. W. F. & Brown, W. O. (1969). The period of adaptation of the fasting metabolic rate of the common fowl to an increase in environmental temperature from 22 °C to 28 °C. Br. Poult. Sci. 10, 13–18.CrossRefGoogle Scholar
Svensson, S. A. (1964). Composition and energy content of eggs, growing chicks, and hens with some notes on preparation and methods of analysis. Lantbr Högsk. Annlr 30, 405–22.Google Scholar
Van Kampen, M. & Romijn, C. (1970). Energy balance and heat regulation in the White Leghorn fowl. In 5th Symposium on Energy Metabolism of Farm Animals, pp. 213–216. European Association for Animal Production, E.A.A.P. Pub. No. 13, Zurich: Juris Druok.Google Scholar
Waring, J. J. & Brown, W. O. (1967). Calorimetrio studies on the utilization of dietary energy by the laying White Leghorn hen in relation to plane of nutrition and environmental temperature. J. agric. Sci., Camb. 68, 149–55.CrossRefGoogle Scholar
Wilson, W. O. (1949). High environmental temperatures as affecting the reaction of laying hens to iodized casein. Poult. Sci. 28, 681–92.CrossRefGoogle Scholar