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A respiration chamber for the study of energy utilization for maintenance and production in the laying hen

Published online by Cambridge University Press:  27 March 2009

J. J. Waring  and
W. O. Brown
J. J. Waring
Affiliation:
Department of Agricultural Chemistry, Queen's University, Belfast
W. O. Brown
Affiliation:
Department of Agricultural Chemistry, Queen's University, Belfast, and Ministry of Agriculture, Northern Ireland
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Extract

1. Construction and details of operation of a respiration chamber suitable for studies on the laying hen are described.

2. Calorimetric data on the utilization of food energy from balanced rations and from glucose are given.

3. The net energy of balanced rations for maintenance and production is 83·7% of the metabolizable energy. The figure for glucose is considerably higher.

4. The maintenance requirement of the 2 kg. laying hen is 88·9 kcal. metabolizable energy/kg./day.

5. Some comments are given on the significance of protein metabolism in relation to the use of indirect calorimetry for avian species.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 65 , Issue 2 , October 1965 , pp. 139 - 146
Copyright
Copyright © Cambridge University Press 1965

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