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Science 28 June 1963:
Vol. 140. no. 3574, pp. 1404 - 1406
DOI: 10.1126/science.140.3574.1404
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Articles

Cardiovascular Responses of the Chicken to Seasonal and Induced Temperature Changes

James A. Vogel 1 and Paul D. Sturkie 1

1 Physiology Section, Rutgers University, New Brunswick, New Jersey

Blood pressure and cardiac output decline as ambient temperature rises in birds acclimatized to both seasonal- and induced-temperature changes, in contrast to the response usually observed in unacclimatized mammals. The decline in chickens is due to a lowered vascular resistance and blood volume. These circulatory adjustments may be related to the fact that excess heat in birds is dissipated through the respiratory system rather than through the skin.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Local action of exogenous nitric oxide (NO) on the skin blood flow of rock pigeons (Columba livia) is affected by acclimation and skin site.
L. M. Peltonen and A. Pyornila (2004)
J. Exp. Biol. 207, 2611-2619
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Science. ISSN 0036-8075 (print), 1095-9203 (online)