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Effect of diets formulated to contain similar amounts of ERDP with different protein sources on blood free and peptide-bound amino acid-N concentrations in Iranian Baloochi lambs

Published online by Cambridge University Press:  20 November 2017

M Danesh Mesgaran
M Danesh Mesgaran*
Affiliation:
Dept of Animal Science, Faculty of Agriculture, University of Mashhad, P O Box 91775-1163, Mashhad, Iran
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Extract

Recent data indicate that rumen fluid contains a relatively high concentration of peptide nitrogen and that it is influenced by the source of protein in the diet (Mesgaran & Parker, 1995). In addition, it has been demonstrated that ruminant gastrointestinal tract may have the potential for absorbing intact peptides, and that the hydrolysis rate of the peptides is influenced by peptide structure in the blood (Mesgaran, 1996; Mesgaran & Parker, 1996). The objective of the present experiment was to investigate the effect of altering the sources of protein in diets with similar effective rumen degradable protein (ERDP), on blood free and peptide-bound amino acid-N (FAA-N and PBAA-N) concentrations in Iranian Baloochi lambs.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2000 , 2000 , pp. 97
Copyright
Copyright © The British Society of Animal Science 2000

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References

Chen, G., Russell, J. B. and Sniffen, C. J. 1987. A procedure for measuring peptides in rumen fluid and evidence that peptide uptake can be a rate-limiting step in ruminal protein degradation. Journal of Dairy Science. 70: 1211–1219.Google Scholar
Mesgaran, M. D. and Parker, D. S. 1995. The effect of dietary protein and energy sources on ruminal accumulation of low molecular weight peptides in sheep. Animal Science. 60: 535.Google Scholar
Mesgaran, M. D. 1996. Ruminal accumulation and fate of low molecular weight peptides in sheep. PhD Thesis, University of Newcastle upon Tyne.Google Scholar
Mesgaran, M. D. and Parker, D. S. 1996. Influence of dipeptide structure on hydrolysis by rumen fluid and blood of sheep. Animal Science. 62: 669–670.Google Scholar