Journal of Nutrition

Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Purchase Article
Right arrow View Shopping Cart
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Fuller, H. L.
Right arrow Articles by Smith, C. F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Fuller, H. L.
Right arrow Articles by Smith, C. F.

Comparison of Heat Production of Chickens Measured by Energy Balance and by Gaseous Exchange1

H. L. Fuller, N. M. Dale and C. F. Smith2

Department of Poultry Science, University of Georgia, Athens, GA 30602

An open-circuit respiration calorimeter suitable for chickens or other small animals has been constructed. The system contains two animal chambers and is capable of determining heat production of two animals or groups of animals independently and simultaneously with gas collection apparatus for continuous sampling of chamber gases. The operation of the system was tested in two experiments by determining heat production of two groups of 10-week-old, full-fed cockerels over a 4-day period both by energy retention (body balance) and gaseous exchange. Heat production (kilocalories per bird per 24 hours) as determined by energy balance versus gaseous exchange was 359 versus 348 in one experiment and 395 versus 393 in the other. The agreement was sufficiently close to support the use of respiration calorimetry to measure heat production of chickens under experimental conditions in this laboratory without killing the experimental subjects. On the basis of metabolic body weight (in kilograms, W0.75) heat production measured in this manner was 161 and 173 kcal (day · W0.75) in experiments 1 and 2, respectively.

KEY WORDS: • respiration calorimeter • open circuit • heat production • energy expenditure • body balance • gaseous exchange • oxygen consumption • carbon dioxide production • energy retention • chickens • roosters

1 Supported by State and Hatch funds allocated to the Georgia Agricultural Experiment Stations of the University of Georgis.

2 Present address: Department of Agriculture, Nassau, Bahamas.

Manuscript received 17 January 1983.




Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
Copyright © 1983 by American Society for Nutrition