Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-22T06:04:08.840Z Has data issue: false hasContentIssue false
  • English
  • Français

A radiological investigation of the effects of cannulation on intestinal motility and digesta flow in sheep

Published online by Cambridge University Press:  27 March 2009

G. Wenham  and
R. S. Wyburn
G. Wenham
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, Scotland, AB2 9SB
R. S. Wyburn
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, Scotland, AB2 9SB
Get access Rights & Permissions [Opens in a new window]

Summary

Radiological examinations were carried out on ten sheep to see what changes in intestinal motility and flow of digesta were caused by intestinal cannulation. Barium sulphate was injected or infused into the abomasum via an implanted catheter; its passage through the intestine and associated muscular contractions were observed using X-ray image intensification. Once the normal pattern had been established for each individual, single or re-entrant cannulae were inserted into one of four positions in the small intestine.

All the cannulations caused some disruption of the normal flow of digesta, causing retention of digesta and distension of the intestine around and proximal to the intraluminal flanges of the cannulae. The duodenum was affected the most, particularly by one type of re-entrant cannula which reduced the degree of jejunal filling; peristaltic contractions often failed to propagate beyond these cannulae and also caused some retrograde movement of digesta between the cannulation site and the duodenal bulb during the irregular contraction phase (ICP) of the migrating myoelectric complex (MMC). These re-entrant cannulae also impaired the clearing effect of regular contraction phase (RCP).

Type
Research Article
Information
The Journal of Agricultural Science , Volume 95 , Issue 3 , December 1980 , pp. 539 - 546
Copyright
Copyright © Cambridge University Press 1980

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

Ash, R. W. (1962). Gastro-intestinal re-entrant cannulae for studies of digestion in sheep. Animal Production 4, 309–312.Google Scholar
Harris, L. E. & Phillipson, A. T. (1962). The measurement of the flow of food to the duodenum of sheep. Animal Production 4, 97–116.Google Scholar
Hayes, B. W., Little, C. O. & Mitchell, G. E. Jr, (1964). Influence of ruminal, abomasal and intestinal flstulation on digestion in steers. Journal of Animal Science 23, 764–766.Google Scholar
MacRae, J. C. (1967). Carbohydrate digestion in the intestinal tract of mature sheep. Ph.D. thesis, University of Newcastle-upon-Tyne.Google Scholar
MacRae, J. C. (1975). In Digestion and Metabolism in the Ruminant (ed. McDonald, I. W. and Warner, A. C.). Armidale: University of New England Publishing Unit.Google Scholar
MacRae, J. C., Reid, C. S. W., Dellow, D. W. & Wyburn, R. S. (1973). Caecal cannulation in the sheep. Research in Veterinary Science 14, 78–85.CrossRefGoogle ScholarPubMed
MacRae, J. C. & Ulyatt, M. J. (1972). Comparison of spot continuous sampling for estimating duodenal digesta flow in sheep. New Zealand Journal of Agricultural Research 15, 98–106.CrossRefGoogle Scholar
MacRae, J. C. & Wilson, S. (1977). The effects of various forms of gastro-intestinal cannulation on digestive measurements in sheep. British Journal of Nutrition 38, 65–71.Google Scholar
Ørskov, E. R., Benzie, D. & Kay, R. N. B. (1970). The effects of feeding procedure on closure of the oesophageal groove in young sheep. British Journal of Nutrition 24, 785–795.Google Scholar
Ørskov, E. R., Grubb, D. A., Wenham, G. & Corrigall, W. (1979). The sustenance of growing and fattening ruminants by intragastric infusion of volatile fatty acid and protein. British Journal of Nutrition 41, 553–558.Google Scholar
Phillipson, A. T. (1952). The passage of digesta from the abomasum of sheep. Journal of Physiology 116, 84–97.CrossRefGoogle Scholar
Putman, P. A. & Davies, R. E. (1965). Postruminal fiber digestibility. Journal of Animal Science 24, 826–829.Google Scholar
Reid, R. L., Shelton, D. C. & Welch, J. A. (1961). In Reaction in the Rumen, p. 37 (ed. Barnett, A. J. G. and Reid, R. L.). London: Edward Arnold.Google Scholar
Ruckebusch, Y. & Bueno, L. (1977). Origins of migrating myoelectric complex in sheep. American Journal of Physiology 233, E483–E487.Google Scholar
Singleton, A. G. (1961). The electromagnetic measurement of the flow of digesta through the duodenum of the goat and the sheep. Journal of Physiology 155, 134–147.CrossRefGoogle ScholarPubMed
Wenham, G. (1974). X-ray image intensification in ruminant physiology. Proceedings of the Nutrition Society 33, 135–139.Google Scholar