CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Australian Journal of Zoology   
Australian Journal of Zoology
Journal Banner
  Evolutionary, Molecular and Comparative Zoology
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Board
Contacts
Content
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
Notice to Authors
Submit Article
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter youtube

red arrow Supplementary Series
blank image
All volumes of the Australian Journal of Zoology Supplementary Series are online and available to subscribers of Australian Journal of Zoology.

 

Article << Previous     |     Next >>   Contents Vol 32(5)

Nitrogen and Urea Metabolism and Nitrogen Requirements of the Common Ringtail Possum, Pseudocheirus Peregrinus, Fed Eucalyptus Andrewsii Foliage.

MJ Chilcott and ID Hume

Australian Journal of Zoology 32(5) 615 - 622
Published: 1984

Abstract

The maintenance nitrogen requirement of mature common ringtail possums, Pseudocheirusperegrinus, feeding on a sole diet of Eucalyptus andrewsii foliage was estimated to be 380 mg.kg-0.75.d-¹ on a dietary basis and 290 mg.kg-0.75.d-¹ on a truly digestible basis. The difference between these two estimates was due to a low true digestibility of nitrogen of 79%. Apparent digestibility of nitrogen was 58%. The level of urea metabolism in the ringtail was low compared with other herbivores. Only 40 mg urea-nitrogen.kg-0.75 was recycled to the gut each day, but this was 96% of irreversible loss rate (i.e. endogenous synthesis rate) and 11% of the ringtail's intake of truly digestible nitrogen. A low maintenance requirement for nitrogen, together with the recycling of a high proportion of endogenous urea to the gut, helps to explain the ability of the ringtail possum to remain in positive nitrogen balance on a sole diet of E. andrewsii foliage of only 1.1% nitrogen content.



Full text doi:10.1071/ZO9840615

© CSIRO 1984

blank image
Subscriber Login
Username:
Password:  

 
PDF (432 KB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2014