Document Detail

Caecal decomposition of uric acid in captive and free ranging willow ptarmigan (Lagopus lagopus lagopus).
MedLine Citation:
PMID:  7282388     Owner:  NLM     Status:  MEDLINE    
Urine entering the caeca of birds contains significant amounts of uric acid. The discovery of great numbers of bacteria utilizing uric acid in the caeca has encouraged the discussion about nitrogen recycling in birds. In this work caecal decomposition of uric acid in wild and captive willow ptarmigan has been investigated using radioactively labelled uric acid injected directly into one of the caeca. The appearance of radioactive CO2 in the expired air was taken as an indication of uric acid breakdown. The decomposition occurred at a rate corresponding to a half-life of 26 min (11-36 min). The results are in accordance with the previously reported observations of huge numbers of uric acid utilizing bacteria in the caeca of a variety of birds, and also with the nitrogen recycling theory. However, no conclusion concerning the nitrogen recycling can be drawn.
A Mortensen; A R Tindall
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta physiologica Scandinavica     Volume:  111     ISSN:  0001-6772     ISO Abbreviation:  Acta Physiol. Scand.     Publication Date:  1981 Feb 
Date Detail:
Created Date:  1981-11-22     Completed Date:  1981-11-22     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0370362     Medline TA:  Acta Physiol Scand     Country:  SWEDEN    
Other Details:
Languages:  eng     Pagination:  129-33     Citation Subset:  IM    
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MeSH Terms
Amoeba / isolation & purification
Animal Population Groups / metabolism*
Animals, Domestic / metabolism*
Animals, Wild / metabolism*
Birds / metabolism*
Cecum / metabolism*,  microbiology
Eukaryota / isolation & purification
Spirochaetales / isolation & purification
Uric Acid / metabolism*
Reg. No./Substance:
69-93-2/Uric Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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