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Rumen fermentation of herbage in sheep receiving carbohydrate supplements

Published online by Cambridge University Press:  27 March 2009

K. R. Christian  and
V. J. Williams
K. R. Christian
Affiliation:
Ruakura Animal Research Station, Hamilton, New Zealand.
V. J. Williams
Affiliation:
Ruakura Animal Research Station, Hamilton, New Zealand.
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Extract

Concentrations of rumen volatile fatty acids, ammonium and protein nitrogen and free microbial count in groups of sheep fed fresh herbage have been compared with concentrations in groups supplemented with pure carbohydrates.

Rumen ammonia concentrations in sucrose and cellulose-supplemented sheep tended to be lower before feeding than in sheep fed herbage only, but this difference disappeared after feeding. Ammonia concentrations in sheep supplemented with starch, and those receiving herbage only were similar before feeding, but the rise after feeding was less for the starch-supplemented group. The rise in volatile fatty acids after feeding was greater when part of the herbage was replaced with an equal weight of dry matter of starch, but lower when replaced with ucrose or cellulose.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 66 , Issue 2 , April 1966 , pp. 285 - 293
Copyright
Copyright © Cambridge University Press 1966

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References

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