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Salivary losses of purine derivatives in sheep

Published online by Cambridge University Press:  24 November 2017

J. Surra ,
J.A. Guada ,
J. Balcells  and
C. Castrillo
J. Surra
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet 177.- 50013 Zaragoza, Spain
J.A. Guada
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet 177.- 50013 Zaragoza, Spain
J. Balcells
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet 177.- 50013 Zaragoza, Spain
C. Castrillo
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet 177.- 50013 Zaragoza, Spain
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Extract

Developed models to estimate rumen microbial yield from the urinary excretion of purine derivatives fail to account for a complete absorbed purines (Chen et al., 1990a, Balcells et al., 1991). Ruminal degradation of purine derivatives recycled via saliva has been suggested as a possible explanation after detecting the presence of allantoin and uric acid in the sheep saliva (Chen et al. 1990b). However, it is not known to what extent these losses may be affected by dietary induced variations in saliva flow (Kay, 1966).

This paper reports preliminary results of an experiment designed to study the effect of diet processing and blood allantoin concentration on the rate of purine derivatives losses through salivary secretion.

Type
Ruminant Metabolism
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1993: Winter meeting , March 1993 , pp. 176
Copyright
Copyright © The British Society of Animal Production 1993

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References

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