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Effect of ruminal infusion of acetic acid and sodium acetate on the concentrations of ciliate protozoa

Published online by Cambridge University Press:  27 March 2009

B. E. A. Borhami ,
K. El-Shazly  and
A. R. Abou Akkada
B. E. A. Borhami
Affiliation:
Department of Animal Production, Faculty of Agriculture, University of Alexandria, Egypt, U.A.R.
K. El-Shazly
Affiliation:
Department of Animal Production, Faculty of Agriculture, University of Alexandria, Egypt, U.A.R.
A. R. Abou Akkada
Affiliation:
Department of Animal Production, Faculty of Agriculture, University of Alexandria, Egypt, U.A.R.
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Summary

Two fistulated rams were infused through the rumen cannulae with acetic acid or sodium acetate for 4 consecutive days. This infusion has caused a significant drop in the daily feed intake and in the concentrations of rumen ciliate protozoa. The holotrich protozoa were the most susceptible, whereas entodinia were the least sensitive, to the reducing effect of acetic acid or sodium acetate. Decreasing the daily feed intake by 30% has caused little or no change in the concentrations of rumen ciliate protozoa. The in vitro incubation of sodium acetate and rumen contents has resulted in a remarkable depression in the protozoal numbers. Most of this decrease occurred after 5 h of incubation. The addition of acetic acid or sodium acetate to washed suspensions of mixed populations of rumen ciliate protozoa has decreased the in vitro volatile fatty acid production. It is suggested that both the low pH and acetate, ion were responsible for the reduction in the protozoal numbers in the rumen of rams infused with acetic acid or sodium acetate. The effect of acetate on the ciliate protozoa could be an explanation of the diurnal changes in the concentrations of various protozoal groups usually observed in the rumen of the host animal.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 78 , Issue 2 , April 1972 , pp. 239 - 244
Copyright
Copyright © Cambridge University Press 1972

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References

REFERENCES

Abou Akkada, A. R., Hobson, P. N. & Howard, B. H. (1959). Carbohydrate fermentation by rumen oligotrich protozoa of the genous Entodinium. Biochem. J. 73, 44.Google Scholar
Abou Akkada, A. R. & Howard, B. H. (1960). The biochemistry of rumen protozoa. 3. The carbohydrate metabolism of Entodinium. Biochem. J. 76, 445–51.CrossRefGoogle Scholar
Armstrong, D. G. & Blaxter, K. L. (1957). The utilization of aoetio, propinnic and butyric acids by fattening sheep. Br. J. Nutr. 11, 413–24.CrossRefGoogle ScholarPubMed
Baile, C. A. & Pfander, W. H. (1966). A possible chemostatic regulatory mechanism of ovine feed intake. Am. J. Physiol. 210, 1243–8.CrossRefGoogle Scholar
Balch, C. C. & Campling, R. C. (1962). A reviews: Regulation of voluntary food intake in ruminants. Nutr. Abstr. Rev. 32, 669–86.Google Scholar
Bhattacharya, A. N. & Warner, R. G. (1967). Rumen pH as a factor for controlling feed intake in ruminants. J. Dairy Sci. 50, 1116–19.CrossRefGoogle ScholarPubMed
Carr, S. B. & Jacobson, D. R. (1967). Intraruminal addition of mass or removal of rumen contents on voluntary intake of the bovine. J. Dairy. Sci. 50 1815–18.CrossRefGoogle ScholarPubMed
Christiansen, W. C., Woods, W. & Burroughs, W. (1964). Ration characteristics influencing rumen protozal population of the bovine. J. Anim. Sci. 23, 984–8.CrossRefGoogle Scholar
Dehority, B. A. & Purser, D. B. (1970). Factors affecting the establishment and numbers of holotrichs protozoa in the ovine rumen. J. Anim. Sci. 30, 445–7.CrossRefGoogle ScholarPubMed
Eadie, J. M. (1962). The development of rumen microbial population in lambs and calves under various conditions of management. J. gen. Microbiol. 29, 563–79.CrossRefGoogle Scholar
Eadie, J. M. (1966). Rumen ciliate studies, 1961–1966. Rep. Rowett. Inst. 22, 85–96.Google Scholar
Montgomery, M. J., Shultz, L. H. & Baumgardt, B. R. (1963). Effect of intraruminal infusion of volatile fatty acids and lactic acid on voluntary hay intake. J. Dairy Sci. 46, 1380–4.CrossRefGoogle Scholar
Naga, M. A. & El-Shazly, K. (1969). Activities of rumen microorganisms in water buffalo (Bos bubalus L.) and in Zebu cattle J. Dairy Res. 36, 1–10.CrossRefGoogle Scholar
Purser, D. B. & Moir, R. J. (1959). Ruminal flora studies in sheep: 9. The effect of pH on the ciliato population of the rumen in vivo. Aust. J. agric. Res. 10, 555–64.CrossRefGoogle Scholar
Simkins, K. L. Jr, Suttie, J. W. & Baumgardt, B. R. (1965). Regulation of food intake in ruminants: 4. Effect of acetate, propionate, butyrate and glucose on voluntary food intake in dairy cattle. J. Dairy Sci. 48, 1635–42.CrossRefGoogle Scholar
Warner, A. C. I. (1962). Some factors influencing the rumen microbial population. J. gen. Microbiol. 28, 129–46.CrossRefGoogle ScholarPubMed
Warner, A. C. I. (1966). Diurnal changes in the concentrations of microorganisms in the rumen of sheep fed limited diets once daily. J. gen. Microbiol. 45, 213–35.CrossRefGoogle ScholarPubMed