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OXYGEN CONSUMPTION IN HEAT‐ADAPTED ANIMALS
Author(s) -
Beattie J.,
Chambers R. D.
Publication year - 1953
Publication title -
quarterly journal of experimental physiology and cognate medical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0033-5541
DOI - 10.1113/expphysiol.1953.sp001012
Subject(s) - zoology , environmental science , production (economics) , oxygen , adaptation (eye) , atmospheric sciences , chemistry , biology , physics , economics , organic chemistry , neuroscience , macroeconomics
1. Heat adaptation of albino rats to an environmental temperature of 29·5° C. requires a period of not less than 28 days. 2. Complete adaptation is indicated when animals within a small weight range (180–260 g.) show a mean heat production which has a standard deviation of less than 3 per cent of the mean value. 3. A slight seasonal change occurs relatively suddenly at the end of May, when the heat production level falls by about 5 per cent. The change to the winter level has not been determined with certainty but may occur in mid‐August. 4. The “winter” level of heat production lies between 690 and 712 Cal./sq. m./24 hrs. and the “summer” level between 657 and 679 Cal./sq. m./24 hrs.