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.
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References
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© 2004 Springer Science+Business Media Dordrecht
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Prasitkusol, P., Ørskov, E.R., Chen, X.B. (2004). Some Aspects of Recovery of [14C]-Allantoin in the Urine of Sheep. In: Makkar, H.P.S., Chen, X.B. (eds) Estimation of Microbial Protein Supply in Ruminants Using Urinary Purine Derivatives. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2844-1_3
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DOI: https://doi.org/10.1007/978-1-4020-2844-1_3
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