Hostname: page-component-848d4c4894-p2v8j Total loading time: 0.001 Render date: 2024-05-25T22:57:59.461Z Has data issue: false hasContentIssue false
  • English
  • Français

Rate of passage of digesta in sheep

4.* Passage of marker through the alimentary tract and the biological relevance of rate-constants derived from the changes in concentration of marker in faeces

Published online by Cambridge University Press:  09 March 2007

W. L. Grovum  and
V. J. Williams
W. L. Grovum
Affiliation:
Department of Physiology, School of Rural Science, University of New England, Armidale, NSW 2351, Australia
V. J. Williams
Affiliation:
Department of Physiology, School of Rural Science, University of New England, Armidale, NSW 2351, Australia
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

1. The rates of passage of markers of fluid and particulate digesta through the sheep alimentary tract have been described mathematically in single-injection experiments by analysing the concentration curves of marker excretion in faecal dry matter and then predicting these concentrations by means of an equation containing two exponential terms. Three components related to this equation are a transit time for digesta in the intestines, a half-time of marker in the reticulo-rumen and a half-time tentatively associated with the passage of marker through the caecum and proximal colon. With this approach no surgical interference with an animal is required to obtain meaningful information about gut function.

2. Abomasal cannulation did not affect the rate of passage of 51Cr EDTA through the gut.

3. The mean half-times (T1/2) for 51Cr EDTA in the reticulo-rumen and hind-gut, respectively, were 646 and 236 min for a roughage diet and 890 and 607 min for a diet consisting mainly of wheat grain, both diets providing approximately the same amounts of digestible dry matter. These results indicated that the changes in half-times were proportionately much greater in the caecum and proximal colon than in the reticulo-rumen. The mean transit time of marker through the digestive tract also increased from 721 to 1345 min when the concentrate diet was given.

4. The complex of chromium-51 with EDTA was excreted faster in faeces than cerium-144–praseodymium-144 when both were given together as a single injection into the reticulorumen. This was caused mainly by differential rates of elimination of water and particulate matter from the reticulo-rumen.

Type
General Nutrition
Information
British Journal of Nutrition , Volume 30 , Issue 2 , September 1973 , pp. 313 - 329
Copyright
Copyright © The Nutrition Society 1973

References

Balch, C. C. (1950). Br. J. Nutr. 4, 361.Google Scholar
Balch, C. C., Balch, D. A., Bartlett, S., Bartrum, M. P., Johnson, V. W., Rowland, S. J. & Turner, J. (1955). J. Dairy Res. 22, 270.Google Scholar
Balch, C. C., Balch, D. A., Bartlett, S., Johnson, V. W., Rowland, S. J. & Turner, J. (1954). J. Dairy Res. 21, 305.Google Scholar
Bines, J. A. & Davey, A. W. F. (1970). Br. J. Nutr. 24, 1013.Google Scholar
Blaxter, K. L., Graham, N. McC. & Wainman, F. W. (1956). Br. J. Nutr. 10, 69.Google Scholar
Brandt, C. S. & Thacker, E. J. (1958). J. Anim. Sci. 17, 218.Google Scholar
Bullen, J. J., Scarisbrick, R. & Maddock, A. (1953). J. Path. Bact. 65, 200.Google Scholar
Campling, R. C. & Freer, M. (1962). Br. J. Nutr. 16, 507.Google Scholar
Campling, R. C., Freer, M. & Balch, C. c. (1961). Br. J. Nutr. 15, 531.Google Scholar
Campling, R. C., Freer, M. & Balch, C. C. (1962). Br. J. Nutr. 16, 115.Google Scholar
Campling, R. C., Freer, M. & Balch, C. C. (1963). Br. J. Nutr. 17, 263.CrossRefGoogle Scholar
Coombe, J. B. & Tribe, D. E. (1963). Aust. J. agric. Res. 14, 70.Google Scholar
Downes, A. M. & McDonald, I. W. (1964). Br. J. Nutr. 18, 153.Google Scholar
Ellis, W. C. & Huston, J. E. (1967). J. Dairy Sci. 50, 1996.Google Scholar
Ellis, W. C. & Huston, J. E. (1968). J. Nutr. 95, 67.CrossRefGoogle Scholar
Eng, K. S. Jr, Riewe, M. E., Craig, J. H. Jr & Smith, J. C. (1964). J. Anim. Sci. 23, 1129.Google Scholar
Freer, M. & Campling, R. C. (1963). Br. J. Nutr. 17, 79.Google Scholar
Grovum, W. L. (1971). Rate of passage of digesta in sheep. PhD Thesis, University of New England, Armidale, NSW, Australia.Google Scholar
Grovum, W. L. & Hecker, J. F. (1973). Br. J. Nutr. 30, 221.CrossRefGoogle Scholar
Grovum, W. L. & Williams, V. J. (1973). Br. J. Nutr. 30, 231.Google Scholar
Hecker, J. F. (1971). Br. J. Nutr. 25, 85.Google Scholar
Hemsley, J. A. & Moir, R. J. (1963). Aust. J. agric. Res. 14, 509.Google Scholar
Hungate, R. E., Phillips, G. D., McGregor, A., Hungate, D. P. & Buechner, H. K. (1959). Science, N. Y. 130, 1192.Google Scholar
Huston, J. E. & Ellis, W. C. (1968). J. agric. Fd Chem. 16, 225.Google Scholar
Jarrett, I. G. (1948). J. Coun. scient. ind. Res. Aust. 21, 311.Google Scholar
King, K. W. & Moore, W. E. C. (1957). J. Dairy Sci. 40, 528.CrossRefGoogle Scholar
Leaver, J. D., Campling, R. C. & Holmes, W. (1969). Anim. Prod. 11, 11.Google Scholar
Miller, J. K., Moss, B. R., Hall, R. F. & Gorman, G. M. (1969). J. Dairy Sci. 52, 1643.Google Scholar
Miller, J. K., Perry, S. C., Chandler, P. T. & Cragle, R. G. (1967). J. Dairy Sci. 50, 355.CrossRefGoogle Scholar
Minson, D. J. & Cowper, J. L. (1966). Br. J. Nutr. 20, 757.Google Scholar
Moir, R. J. & Harris, L. E. (1962). J. Nutr. 77, 285.CrossRefGoogle Scholar
Montgomery, M. J. & Baumgradt, B. R. (1965). J. Dairy Sci. 48, 569.Google Scholar
Phillips, G. D., Hungate, R. E., McGregor, A. & Hungate, D. P. (1960). J. agric. Sci., Camb. 54, 417.Google Scholar
Putnam, P. A., Bond, J. & Lehmann, R. (1967). J. Anim. Sci. 26, 1428.Google Scholar
Rescigno, A. & Segre, G. (1966). In Durg and Tracer Kinetics, p. 20. Waltham, Massachusetts: Blaisdell Publishing Company.Google Scholar
Ruckebusch, Y. (1970). J. Physiol., Lond. 210, 857.Google Scholar
Shellenberger, P. R. & Kesler, E. M. (1961). J. Anim. Sci. 20, 416.Google Scholar
Waldo, D. R., Miller, R. W., Okamoto, M. & Moore, L. A. (1965). J. Dairy Sci. 48, 1473.Google Scholar
Warner, A. C. I. & Stacy, B. D. (1968). Br. J. Nutr. 22, 369.Google Scholar
Weston, R. H. (1968). Aust. J. agric. Res. 19, 261.Google Scholar
White, R. G., Steel, J. W., Leng, R. A. & Luick, J. R. (1969) Biochem. J. 114, 203.Google Scholar