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Some Aspects of Recovery of [14C]-Allantoin in the Urine of Sheep

  • P. Prasitkusol
  • E. R. Ørskov
  • X. B. Chen

Abstract

Two Experiments were carried out to determine the extent of variation in the recovery of [14C]-allantoin in the urine of sheep given a general purpose diet at three levels of intake. In Experiment I, the level of feed intake did not affect the recovery of plasma [14C]-allantoin in the urine of sheep but there was a significant difference between individuals on the recovery (P <0.05). In contrast, in Experiment II there was no effect of animals on the recovery when four sheep were given the same level of feed intake. However, the effect of period on [14C]-allantoin recovered in the urine was statistically significant (P <0.05). The proportion of plasma [14C]-allantoin excreted in urine of eight sheep injected intravenously with labelled allantoin in Experiment I and II varied from 66–95% (mean 83 ±SE 1.6%) showing the variation between individuals within species.

Keywords

Feed Intake Microbial Protein Tracer Solution Purine Derivative Jugular Catheter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • P. Prasitkusol
    • 1
  • E. R. Ørskov
    • 1
  • X. B. Chen
    • 1
  1. 1.International Feed Resources UnitMacaulay InstituteCraigiebuckler, AberdeenUK

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