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Amylolytic activity in the rumen of the sheep

Published online by Cambridge University Press:  27 March 2009

Hamed Nasr
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeenshire

Extract

1. Rumen contents of sheep given three different diets contained free bacterial α-amylase. The method of obtaining a cell-free rumen filtrate containing the enzyme is described.

2. Amylase potency in the rumen was highest in the sheep given a diet of flaked maize, intermediate in that given a mixed diet of hay and concentrate and lowest in that given a diet of casein.

3. The effect of rumen amylase on structural maize and potato starches has been investigated.

4. Absence of amylase from sheep saliva was confirmed.

5. Where flaked maize is fed, one of the organisms responsible for amylase production in the rumen of the sheep is Cl. butyricum.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1950

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References

REFERENCES

Baker, F. & Nasr, H. (1947). J. R. Micr. Soc. 67, 27.CrossRefGoogle Scholar
Baker, F., Nasr, H. & Morrice, F. (1948). J. Gen. Microbiol. 3, xv.Google Scholar
Baker, F., Nasr, H., Morrice, F. & Bruce, J. (1950). J. Path. Bact. (in the Press).Google Scholar
Dukes, H. H. (1947). The Physiology of Domestic Animals, 6th ed. p. 272. New York: Comstock Publishing Co., Inc.Google Scholar
Henneberg, W. (1922). Zbl. Bakt. (Abt. II), 55, 242.Google Scholar
Hinshelwood, R. (1949). Chemical Kinetics of the Bacterial Cell. Oxford: Oxford University Press.Google Scholar
Masson, M. (1950). Brit.J. Nutr., Proc. (in the Press).Google Scholar
McDougall, E. I. (1948). Biochem. J. 43, 99.CrossRefGoogle Scholar
Nasr, H. (1950). Thesis. Aberdeen University. 1, 74, 93.Google Scholar
Percival, J. (1920). Agricultural Bacteriology, 2nd ed. p. 288. London: Duckworth.CrossRefGoogle Scholar
Van Der Wath, J. G. (1948). Onderstepoort J. Vet. Sci. 23, 367.Google Scholar
Whelan, W. J. & Nasr, H. (1950). Biochem. J. (in the Press).Google Scholar
Woodman, H. E. & Stewart, J. (1928). J. Agric. Sci. 18, 713.CrossRefGoogle Scholar