Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-26T02:38:37.805Z Has data issue: false hasContentIssue false
  • English
  • Français

An examination of the net changes in amino-acid composition within the rumen of mature wether sheep using canonical variate analysis

Published online by Cambridge University Press:  27 March 2009

J. S. Fenlon  and
D. E. Beever
J. S. Fenlon
Affiliation:
Grassland Research Institute, Hurley, Maidenhead, Berks SL6 5LR
D. E. Beever
Affiliation:
Grassland Research Institute, Hurley, Maidenhead, Berks SL6 5LR
Get access Rights & Permissions [Opens in a new window]

Summary

Data for the quantity of ammo acids consumed and their flow rates at the proximal duodenum for 33 diets fed to sheep have been statistically analysed by both univariate and multivariate methods. Analysis of variance of net loss (g/day) between mouth and duodenum of individual and total acida was not conclusive. Canonical variate analysis which takes regard of the correlations between different acids both within and between diets provided a conoise method of discriminating between diets. The advantage of this method in generating a unified account of digestion within the rumen is that it effectively reduces the problem from one of many dimensions to a situation where only the first few transformed variables need to be considered.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 87 , Issue 2 , October 1976 , pp. 255 - 268
Copyright
Copyright © Cambridge University Press 1976

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Banfield, C. F. & Harries, M. J. (1975). A technique for comparing judges performance in sensory tests. Journal of Food Technology 10, 1–10.CrossRefGoogle Scholar
Beever, D. E., Harrison, D. G., Thomson, D. J., Cammell, S. B. & Osbourn, D. F. (1974). A method for the estimation of dietary and microbial protein in duodenal digesta of ruminants. British Journal of Nutrition 32, 99–111.CrossRefGoogle ScholarPubMed
Beever, D. E., Thomson, D. J., Pfeffer, E. & Abmstrong, D. G. (1971). The effect of drying and ensiling grass on its digestion in sheep. British Journal of Nutrition 26, 123–34.CrossRefGoogle ScholarPubMed
Black, A. L., Kleiber, M., Smith, H. M. & Stewart, D. N. (1957). Acetate as a precursor of amino acids of casein in the intact dairy cow. Biochemica et Biophysica Ada 23, 54–9.CrossRefGoogle ScholarPubMed
Brown, G. F., Armstrong, D. G. & MacRae, J. C. (1968). The establishment in one operation of a cannula into the rumen and re-entrant cannulae into the duodenum and ileum of the sheep. British Veterinary Journal 124, 78–82.CrossRefGoogle ScholarPubMed
Byers, M. (1971). Amino acid composition and in vitro digestibility of some protein fractions from three species of leaves of various ages. Journal of the Science of Food and Agriculture 22, 242–51.CrossRefGoogle Scholar
Clarke, E. M. W., Ellinger, G. M. & Phillipson, A. T. (1967). The influence of diet on the nitrogenous components passing to the duodenum and through the lower ileum of the sheep. Proceedings of the Royal Society B 166, 63–79.Google Scholar
Coehlo da Silva, J. F. (1972). Ph.D. Thesis, University of Newcastle-upon-Tyne.Google Scholar
Coehlo da Silva, J. F., Seeley, R. C., Beever, D. E., Prescott, J. H. D. & Armstrong, D. G. (1972 a). The effect in sheep of physical form and stage of growth on the sites of digestion of a dried grass. 2. Sites of nitrogen digestion. British Journal of Nutrition 28, 357–71.CrossRefGoogle Scholar
Coehlo da Silva, J. F., Seeley, R. C., Thomson, D. J., Beever, D. E. & Armstrong, D. G. (1972 b). The effect in sheep of physical form on the sites of digestion of a dried lucerne diet. 2. Sites of nitrogen digestion. British Journal of Nutrition 28, 43–61.CrossRefGoogle Scholar
Downes, A. M. (1961). On the amino acids essential for the tissues of sheep. Australian Journal of Biological Sciences 14, 254–9.CrossRefGoogle Scholar
Federer, W. T. (1955). Experimental Design. New York: The Macmillan Co.Google Scholar
Gower, J. C. & Ross, G. J. S. (1969). Minimum spanning trees and single linkage cluster analysis. Applied Statistics 18, 54–64.CrossRefGoogle Scholar
Gower, J. C. & Ross, G. J. S. (1974). Multivariate and Cluster Analysis-GENSTAT Users’ Guide no. 4. Inter-University/Rosearch Council Series no. 18, University of Edinburgh.Google Scholar
Harrison, D. G., Beever, D. E., Thomson, D. J. & Osbourn, D. F. (1973). The influence of diet upon the quantity and types of amino acids leaving the small intestine of sheep. Journal of Agricultural Science, Cambridge 81, 391–401.CrossRefGoogle Scholar
Hogan, J. P. & Weston, R. H. (1970). Quantitative aspects of microbial protein synthesis. In Physiology of Digestion and Metabolism in the Ruminant (ed. Phillipson, A. T.), pp. 474–85. Newcastle-upon-Tyne: Oriel Press Ltd.Google Scholar
Krzanowski, W. J. (1971). The algebraic basis of classical multivariate methods. The Statistician 20, 51–61.CrossRefGoogle Scholar
MacRae, J. C. & Armstrong, D. G. (1969). Studies on intestinal absorption in the sheep. British Journal of Nutrition 23, 19–23.Google Scholar
MacRae, J. C. & Ulyatt, M. J. (1974). Quantitative digestion of fresh herbage by sheep. II. The sites of digestion of some nitrogenous constituents. Journal of Agricultural Science, Cambridge 82, 309–19.CrossRefGoogle Scholar
Miller, R. G. (1966). Simultaneous Statistical Influence. New York: McGraw-Hill Book Co.Google Scholar
Pearce, S. C. (1969). Multivariate techniques of use in biological research. Experimental Agriculture 5, 67–77.CrossRefGoogle Scholar
Proud, C. (1974). Ph.D. Thesis, University of Newcastle-upon-Tyne.Google Scholar
Seal, H. L. (1964). Multivariate Statistical Analysis for Biologists. London: Methuen & Co. Ltd.Google Scholar
Thomson, D. J., Beever, D. E., Coehlo da Silva, J. F.Armstrong, D. G. (1972). The effect in sheep of physical form on the sites of digestion of a dried lucerne diet. 1. Sites of organic matter, energy and carbohydrate digestion. British Journal of Nutrition 28, 31–41.CrossRefGoogle ScholarPubMed
Ulyatt, M. J., MacRae, J. C., Clarke, R. T. J. & Pearce, P. D. (1975). Quantitative digestion of fresh herbage by sheep. IV. Protein synthesis in the stomach. Journal of Agricultural Science, Cambridge 84, 453–8.CrossRefGoogle Scholar