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Activity and energy expenditure in laying hens: 2. The energy cost of exercise

Published online by Cambridge University Press:  27 March 2009

M. van Kampen
Affiliation:
Laboratory for Veterinary Physiology, Alex. Numankade 93, Utrecht, The Netherlands

Summary

In capacity studies on adult White Leghorn hens during exercise it was found that the maximum velocity of the bird was 2·4 km/h.

Metabolic rate increased linearly with running speed and, between the speeds of 1 and 2 km/h, was 53–65% higher than the metabolic rate at rest.

The bird moved faster largely by increasing its stride.

The cost of bipedal locomotion for hens, in contrast to men and rhea, is lower than the cost of the quadrupedal locomotion of mammals.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1976

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