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The relation between body size and maximum and minimum metabolic rates in the new‐born pig
Author(s) -
Mount L. E.,
Stephens D. B.
Publication year - 1970
Publication title -
the journal of physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.802
H-Index - 240
eISSN - 1469-7793
pISSN - 0022-3751
DOI - 10.1113/jphysiol.1970.sp009070
Subject(s) - relation (database) , zoology , mathematics , biology , computer science , database
1. Measurements of rates of oxygen consumption were made on a total of sixty‐two Large White pigs aged between 1 hr and 6 days, with a range of body weight from 0·75 to 2·40 kg. 2. The maximum rate was determined from the continuous estimation of oxygen consumption as the environmental temperature fell past the point at which the maximum occurred. 3. The minimum rate was determined both as the environmental temperature rose through the zone of thermal neutrality, and from measurements at thermal neutrality. 4. In animals aged 1‐6 days the mean maximum rate was 49·0 ml. O 2 /kg.min, and the mean minimum was 15·3 ml. O 2 /kg.min. Both rates were proportional to body weight and not to surface area. 5. Pigs less than 1 day old exhibited lower maximum and minimum rates than the older pigs.