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Food intake in sheep following intraruminal infusion of extracts from lucerne silage with particular reference to organic acids and products of protein degradation

Published online by Cambridge University Press:  27 March 2009

J. G. Buchanan-Smith  and
L. E. Phillip
J. G. Buchanan-Smith
Affiliation:
University of Guelph, Guelph, Ontario, Canada N10 2WI
L. E. Phillip
Affiliation:
University of Guelph, Guelph, Ontario, Canada N10 2WI
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Summary

Sheep were infused intraruminally with iso-osmotic solutions of saline, organic acids or lucerne silage extracts with or without additional acids and products of protein degradation found in silage. The post-ingestive effects of silage constituents on food intake were assessed by measuring the voluntary consumption of high dry matter silage over a 20 h period following feeding. In Expt 1, three different silage extracts each depressed food intake up to 4 h following feeding. In Expt 2, one of these extracts, to which 40 g of γ-amino butyric acid (GABA) was added, depressed intake up to 4 h following feeding; with the further addition cf 10 g α-amino butyric acid (AABA) and 28 g amines to this extract, intake was enhanced within 0·5 h but depressed from 4 to 8 h following feeding. In Expt 3, infusion of organic acids alone did not significantly depress food intake relative to saline, nor was there a discernible effect on food intake when graded levels of nitrogenous constituents from silage were added to the infusates. In Expt 4, infusion of an extract, to which only AABA and four other amines were added, depressed cumulative intake up to 8 h following feeding and had a more pronounced effect on food consumption than infusion of the extract with these constituents together with GABA. It was concluded that soluble constituents in silage can inhibit intake but no single constituent is primarily responsible.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 106 , Issue 3 , June 1986 , pp. 611 - 617
Copyright
Copyright © Cambridge University Press 1986

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References

Association Of Official Analytical Chemists (1980). Official Methods of Analysis (13th edn). Washington, D.C.: Association of Official Analytical Chemists.Google Scholar
Baile, C. A. & Della-Fera, M. A. (1984). Peptidergic control of food intake in food-producing animals. Federation Proceedings 43, 2898–2902.Google Scholar
Baile, C. A. & Forbes, J. M. (1974). Control of feed intake and regulation of energy balance in ruminants. Physiology Reviews 54, 160–214.CrossRefGoogle ScholarPubMed
Bhattacharya, A. N. & Warner, R. G. (1968). Effect of propionate and citrate on depressed feed intake after intraruminal infusion of acetate in dairy cattle. Journal of Dairy Science 51, 1091–1093.Google Scholar
Buchanan-Smith, J. G. & Yao, Y. T. (1981). Effects of additives containing lactic acid bacteria and/or hydrolytic enzymes with an antioxidant upon the preservation of corn or alfalfa silage. Canadian Journal of Animal Science 61, 669–680.CrossRefGoogle Scholar
Clancy, M., Wangsness, P. J. & Baumgardt, B. R. (1977). Effect of silage extract on voluntary umen fluid constituents and rumen motility. Journal of Dairy Science 60, 580–590.Google Scholar
Conrad, H. R., Baile, C. A. & Mayer, J. (1977). Changing meal patterns and suppression of feed intake with increasing amounts of dietary non-protein nitrogen in ruminants. Journal of Dairy Science 60, 1725–1733.CrossRefGoogle Scholar
Dewar, W. A. & Mcdonald, P. (1961). Determination of dry matter in silage by distillation with toluene. Journal of the Science of Food and Agriculture 12, 790–796.CrossRefGoogle Scholar
Grovum, W. L. (1983). Factors affecting the voluntary intake of food by sheep. 5. The effect of intravenous infusions of gastrin, cholecystokinin and secretin on motility of the reticulo-rumen and intake. British Journal of Nutrition 45, 183–201.CrossRefGoogle Scholar
Lichtenberger, L. M., Graziani, L. A. & Dubinsky, W. P. (1982). Importance of dietary aminos in meal induced gastrin release. American Journal of Physiology 243, G341–G347.Google ScholarPubMed
Mcdonald, P. (1981). The Biochemistry of Silage. Chichester: John Wiley.Google Scholar
Morley, J. E., Levine, A. S., Gosnell, B. A. & Billington, C. J. (1984). Neuropeptides and appetite: contribution of neuropharmacological modelling. Federation Proceedings 43, 2903–2907.Google Scholar
Neumark, H., Bondi, A. & Volcani, R. (1964). Amines, aldehydes and ketoacids in silages and their effect on food intake by ruminants. Journal of the Science of Food and Agriculture 15, 487–492.Google Scholar
Phillip, L. E., Buchanan-Smith, J. G. & Grovum, W. L. (1981 a). Effects of infusing the rumen with acetic acid and nitrogenous constituents in maize silage extracts on food intake, ruminal osmolality and blood acid-base balance in sheep. Journal of Agricultural Science, Cambridge 96, 429–438.CrossRefGoogle Scholar
Phillip, L. E., Buchanan-Smith, J. G. & Grovum, W. L. (1981 b). Food intake and ruminal osmolality in sheep: differentiation of the effect of osmolality from that of the products of maize silage fermentation. Journal of Agricultural Science, Cambridge 96, 439–445.CrossRefGoogle Scholar
Steel, R. G. D. & Torrie, J. H. (1960). Principles and Procedures of Statistics. New York: McGraw-Hill.Google Scholar
Thomas, J. W., Moore, L. A., Okamoto, M. & Sykes, J. F. (1961). A study of factors affecting rate of intake of heifers fed silages. Journal of Dairy Science 44, 1471–1483.Google Scholar
Thomas, P. C., Kelly, N. C. & Chamberlain, D. G. (1980). Silage. Proceedings of the Nutrition Society 39, 257–264.CrossRefGoogle ScholarPubMed
Ulyatt, J. M. (1965). The effects of intraruminal infusion of volatile fatty acids on food intake of sheep. New Zealand Journal of Agricultural Research 8, 397–408.CrossRefGoogle Scholar