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Rates of rumen fermentation in relation to ammonia concentration

Published online by Cambridge University Press:  09 March 2007

A. Z. Mehrez ,
E. R. Ørskov  and
I. McDonald
A. Z. Mehrez
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
E. R. Ørskov
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
I. McDonald
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Abstract

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1. Four sheep were fed from automatic continuous feeders on whole barley fortified with graded levels of a urea solution. This approach was to a large extent successful in maintaining relatively steady states of rumen ammonia concentration.

2. Rates of barley fermentation in the rumen at various rumen NH3 concentrations were assessed by measuring the disappearance of barley dry matter from polyester bags suspended in the rumen of these sheep.

3. The minimal NH3 concentration for maximal rate of fermentation was estimated as 235 mg/l rumen fluid.

Type
Research Article
Information
British Journal of Nutrition , Volume 38 , Issue 3 , November 1977 , pp. 437 - 443
Copyright
Copyright © The Nutrition Society 1977

References

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