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Effect of fat supplementation on voluntary food intake and rumen metabolism in sheep

Published online by Cambridge University Press:  06 August 2007

J. Kowalczyk ,
E. R. ørskov ,
J. J. Robinson  and
C. S. Stewart
J. Kowalczyk
Affiliation:
The Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
E. R. ørskov
Affiliation:
The Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
J. J. Robinson
Affiliation:
The Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
C. S. Stewart
Affiliation:
The Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Abstract

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1. In an experiment in which a high-fat supplement was given in the dry form to lambs offered dried grass ad lib., both the voluntary intake and digestibility of the dried grass were reduced. When the high-fat supplement was given in a liquid suspension so that the rumen was by-passed, the voluntary intake and digestibility of the dried grass were not significantly altered.

2. The effect of injecting an emulsion of tallow into the rumen of sheep on rumen metabolism was studied in another experiment. Increasing the fat supplementation lowered the rate of digestion of both dried grass and cotton thread, lowered markedly the concentration of rumen ammonia, and raised the proportion of propionic acid in the rumen.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 37 , Issue 2 , March 1977 , pp. 251 - 257
Copyright
Copyright © The Nutrition Society 1977

References

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