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The mechanism of passage of endogenous urea through the rumen wall and the role of ureolytic epithelial bacteria in the urea flux

Published online by Cambridge University Press:  09 March 2007

K.-.J. Cheng  and
R. J. Wallace
K.-.J. Cheng
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
R. J. Wallace
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Abstract

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1. The rumen urea concentration in gnotobiotic lambs lacking ureolytic bacteria was equal to that of blood.

2. Bacterial urease (EC 3.5.1.5.) activity in sheep fed by intraruminal and intra-abomasal infusion was inversely related to rumen ammonia concentration.

3. A model is proposed for the facilitation and control of urea flux by wall-bound ureolytic bacteria.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 42 , Issue 3 , November 1979 , pp. 553 - 557
Copyright
Copyright © The Nutrition Society 1979

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