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The effect of rumen protected protein on plasma insulin, IGF-1 and glucose in sheep

Published online by Cambridge University Press:  20 November 2017

K.N. Muturi ,
L.M. Birnie ,
J. Struthers ,
N.M. Wheelhouse  and
M.A. Lomax
K.N. Muturi
Affiliation:
Department of Agriculture, Macrobert Building, University of Aberdeen, Aberdeen, AB24 5UA, U.K.
L.M. Birnie
Affiliation:
Department of Agriculture, Macrobert Building, University of Aberdeen, Aberdeen, AB24 5UA, U.K.
J. Struthers
Affiliation:
Department of Agriculture, Macrobert Building, University of Aberdeen, Aberdeen, AB24 5UA, U.K.
N.M. Wheelhouse
Affiliation:
Department of Agriculture, Macrobert Building, University of Aberdeen, Aberdeen, AB24 5UA, U.K.
M.A. Lomax
Affiliation:
Department of Agriculture, Macrobert Building, University of Aberdeen, Aberdeen, AB24 5UA, U.K.
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Extract

Lean tissue deposition occurs in ruminants fed at maintainance energy intake provided that sufficient protein is supplied in the diet (Fattet et al 1984). The effect may be at least partially regulated by the endocrine system as circulating levels of insulin and insulin-like growth factor-1(IGF-1) are increased by the inclusion of high levels of protein in energy restricted diets (Kriel et al, 1992). The present study examines the extent to which IGF-1 and insulin concentrations are modulated by the inclusion of various amounts of rumen protected protein (Amino Green 98) in lambs restricted in metabolisable energy (ME) intake.

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Proceedings of the British Society of Animal Science , Volume 1999 , 1999 , pp. 163
Copyright
Copyright © The British Society of Animal Science 1999

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References

Fattet, I., Hovell, F.D.DeB, Ørskov, E.R., Kyle, D.J., Pennie, K. and Smart, R.I. (1984). Undernutrition in sheep. The effect of supplementation with protein on protein accretion. British Journal of Nutrition 52, 561–574.CrossRefGoogle ScholarPubMed
Kriel, G.V., Bryant, M.J. and Lomax, M.A. (1992). Effect of dietary protein intake and intravenous glucose infusion on plasma concentrations of Insulin-like growth factor-1 in lambs. Journal of Endocrinology 132, 195–199 CrossRefGoogle ScholarPubMed