Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-28T19:44:38.863Z Has data issue: false hasContentIssue false
  • English
  • Français

Passage of protozoa and volatile fatty acids from the rumen of the sheep and from a continuous in vitro fermentation system

Published online by Cambridge University Press:  24 July 2007

R. A. Weller  and
A. F. Pilgrim
R. A. Weller
Affiliation:
Division of Nutritional Biochemistry, CSIRO, Adelaide, South Australia
A. F. Pilgrim
Affiliation:
Division of Nutritional Biochemistry, CSIRO, Adelaide, South 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. A procedure for sampling digesta from within the omasal canal of sheep given a variety of roughage diets was used to enable comparison to be made of the composition of effluent from the reticulo-rumen with that of rumen fluid.

2. Concentrations of protozoa in effluents, relative to a soluble marker continuously infused intraruminally, were usually less than 20% of corresponding rumen fluid concentrations. It was estimated that the amount of protozoal nitrogen leaving the rumen represented less than 2% of dietary N.

3. Passage of volatile fatty acids (VFA) from the rumen in effluent was less than 75% of that indicated by rumen concentrations.

4. A continuous, in vitro fermentation system was developed, in which outputs of protozoa were comparable with in vivo outputs.

Type
General Nutrition
Information
British Journal of Nutrition , Volume 32 , Issue 2 , September 1974 , pp. 341 - 351
Copyright
Copyright © The Nutrition Society 1974

References

REFERENCES

Aafjes, J. H. & Nijhof, J. K. (1967). Br. vet.J. 123, 436.CrossRefGoogle Scholar
Abe, M. & Kumeno, F. (1973). J. Anim. Sci. 36, 941.CrossRefGoogle Scholar
Hume, I. D., Moir, R. J. & Somers, M. (1970). Aust.J. agric. Res. 21, 283.CrossRefGoogle Scholar
Hungate, R. E. (1966). The Rumen and its Microbes p. 143. New York: Academic Press.Google Scholar
McNaught, M. L., Owen, E. C., Henry, K. M. & Kon, S. K. (1954). Biochem. J. 56, 151.CrossRefGoogle Scholar
Pilgrim, A. F., Gray, F. V., Weller, R. A. & Belling, G. B. (1970). Br. J. Nutr. 24, 589.CrossRefGoogle Scholar
von Engelhardt, W. & Ehrlein, H. J. (1968). Pfügers Arch. ges. Physiol. 300, 36.Google Scholar
Warner, A. C. I. (1966). J. gen. Microbiol. 45, 213.CrossRefGoogle Scholar
Watson, R. H. (1944). Bull. Coun. scient. ind. Res., Melb. no. 180–1.Google Scholar
Weller, R. A. (1957). Aust. J. biol. Sci. 10, 384.CrossRefGoogle Scholar
Weller, R. A. & Gray, F. V. (1954). J. exp. Biol. 31, 40.CrossRefGoogle Scholar
Weller, R. A., Gray, F. V., Pilgrim, A. F. & Jones, G. B. (1967). Aust. J. agric. Res. 18, 107CrossRefGoogle Scholar
Weller, R. A., Pilgrim, A. F. & Gray, F. V. (1962). Br. J. Nutr. 16, 83.CrossRefGoogle Scholar
Weller, R. A., Pilgrim, A. F. & Gray, F. V. (1971). Br.J. Nutr. 26, 487.CrossRefGoogle Scholar
Willes, R. F. & Mendel, V. E. (1964). Am. J. vet. Res. 25, 1302.Google Scholar