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Influence of saponins and sapogenins on the bacteriolytic activity of ciliate protozoa from the sheep rumen

Published online by Cambridge University Press:  05 November 2021

B. Teferedegne ,
P.O. Osuji ,
A. Odenyo ,
R. J. Wallace  and
C.J. Newbold
B. Teferedegne
Affiliation:
Rowett Research Institute, Aberdeen AB21 9SB, UK International Livestock Research Institute (ILRI), P.O.Box 5689, Addis Ababa, Ethiopia
P.O. Osuji
Affiliation:
International Livestock Research Institute (ILRI), P.O.Box 5689, Addis Ababa, Ethiopia
A. Odenyo
Affiliation:
International Livestock Research Institute (ILRI), P.O.Box 5689, Addis Ababa, Ethiopia
R. J. Wallace
Affiliation:
Rowett Research Institute, Aberdeen AB21 9SB, UK
C.J. Newbold
Affiliation:
Rowett Research Institute, Aberdeen AB21 9SB, UK
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Extract

Foliage from the tropical leguminous tree, Sesbania sesban, is toxic to rumen protozoa in vitro, due to materials present in a saponins-containing extract of the foliage (Newbold et al. 1997). Suppression of protozoal numbers in vivo when S. sesban is added to the diet is either transient or non-existent, however, even though washed protozoa remain sensitive to S. sesban in vitro (Newbold et al. 1997, Odenyo et al. 1997). A possible reason is that saponins are metabolised in rumen fluid (Makkar and Becker 1997). The aims of this study were to determine if the antiprotozoal effect of different accessions of S. sesban was related to their saponins composition, and if conversion of saponins to their sapogenin derivatives was a possible cause of the loss of the antiprotozoal effect in vivo.

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Information
Proceedings of the British Society of Animal Science , Volume 1998 , 1998 , pp. 88
Copyright
Copyright © The British Society of Animal Science 1998

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References

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