Design of the mammalian respiratory system. III Scaling maximum aerobic capacity to body mass: wild and domestic mammals.
Date
1981-04Author
Taylor, CR
Maloiy, GMO
Weiber, ER
Langman, VA
Kamau, JM
Seeherman, HJ
Heglund, NC
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
The purpose of this study was to determine whether the maximal rate of oxygen consumption (Vo2max) is scaled proportionally to Mb1.0, as the diffusing capacity of the lung, or proportionally to Mb0.75, as the standardized resting rate of oxygen consumption (V02std). We measured Vo2max on a variety of mammalian species (14 wild species and 8 domestic or laboratory species ranging in Mb from 7.2 g to 263 kg) using the same 'treadmill' procedure for all animals. For the wild species we found: Vo2max = 1.94.Mb0.79; r=0.995 where Vo2max has the units ml . sec-1 and mb is in kg. There was a great variability in Vo2max among domestic species of the same size, horse and dog having a Vo2max more than 3 times that of a cow and sheep, respectively. Both the variability in Vo2max with body size and among animals of the same size provide powerful tools for investigating the relationship between structure and function at each step in the respiratory system, from the oxygen in environmental air to the oxygen sink in the mitochondria.
URI
http://www.sciencedirect.com/science/journal/00345687http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/23688
Citation
Respiration physiology. 1981 Apr;44(1):25-37.Publisher
Department of Veterinary Anatomy and Physiology, University of Nairobi
Subject
MammalianRespiratory system.
Maximum aerobic capacity
Body mass
Wild mammals
Domestic mammals
Description
Journal article