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A note on the flow of endogenous protein to the omasum and abomasum of steers

Published online by Cambridge University Press:  02 September 2010

F. J. Hart  and
Jane Leibholz
F. J. Hart
Affiliation:
Coopers Pitman-Moore, ‘Birling’ Northern Road, Bringelly, NSW 2171, Australia
Jane Leibholz
Affiliation:
Department of Animal Husbandry, University of Sydney, Camden, NSW 2570, Australia
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Abstract

Three steers cannulated in the rumen and abomasum were given a diet of wheat straw, chopped and soaked in sodium hydroxide and then washed to pH less than 8. The straw was sprayed with sucrose, urea and minerals. The diet was free of digestible protein and given at 1·7 to 4·1 kg/day. Microbial protein flowing to the omasum was measured by 15N. By difference, the flow of endogenous protein nitrogen to the omasum was found to be 2·2 g/kg dry-matter intake. The flow of endogenous protein nitrogen to the abomasum was 3·3 to 9·4 g/kg dry-matter intake, and it decreased with increasing food intake.

Keywords

abomasumendogenous proteinomasumsteers
Type
Research Article
Information
Animal Production , Volume 51 , Issue 1 , August 1990 , pp. 217 - 219
Copyright
Copyright © British Society of Animal Science 1990

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References

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