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The effect of gossypol on rumen fungal attachment to and degradation of cellulose in culture

Published online by Cambridge University Press:  20 November 2017

Ismartoyo ,
C.S. Stewart ,
T. Acamovic  and
A.J. Richardson
Ismartoyo
Affiliation:
SAC, 581 King Street, AB9 1UD
C.S. Stewart
Affiliation:
Rowett Research Institute, Bucksburn, AB2 9SB
T. Acamovic
Affiliation:
SAC, 581 King Street, AB9 1UD
A.J. Richardson
Affiliation:
Rowett Research Institute, Bucksburn, AB2 9SB
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Extract

Whole cottonseed and other cotton products contain gossypol {2,2’bi (formyl-1,6,7 trihydroxy-5-isopropyl-3-methyl napthalene)},a polyphenolic compound that is toxic to prefunctional ruminants and monogastric animals. Gossypol in excessive quantities may escape detoxification by the animal and produce toxicosis in functional ruminants. Recent reports have documented that gossypol inhibits rumen microbial growth and the degradation of grass hay by rumen microbes (Ismartoyo et al, 1993), growth and total protein content of animal cells (Ismartoyo et al, 1994a) and fermentation by rumen protozoa in culture (Ismartoyo et al, 1994b). The present study reported herein was designed to investigate the effect of gosssypol on the degradation of cellulose by pure cultures of the rumen fungus Neocalimastix frontalis strain REl.

Type
Cattle Nutrition & Production
Information
Proceedings of the British Society of Animal Science , Volume 1995 , March 1995 , pp. 153
Copyright
Copyright © The British Society of Animal Science 1995

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References

Hobson, P.N. 1969. Rumen bacteria. In Methods in microbiology, Vol.3B, ed. Norris, J.R. and Ribbons, D.W.. Academic Press, London and New York, pp.133–49.Google Scholar
Ismartoyo, , Acamovic, T. and Stewart, C.S. 1993. The effect of gossypol on the rumen microbial degradation of grass hay under consecutive batch culture (CBC). Paper 171, BSAP Winter Meeting Scarborough 15-17 March 1993.Google Scholar
Ismartoyo, and Acamovic, T. 1994a. The effect of gossypol on animal cells in culture. In Plant-Associated Toxins ; Agricultural, Phytochamical & Ecological Aspects. Ed. Colegate, S.M. & Dorling, P.R.. C.A.B International, Wallingford, United Kingdom.Google Scholar
Ismartoyo, , Stewart, C.S., Shand, W.J. and Acamovic, T. 1994b. The effect of gossypol on the rumen protozoal degradation of grass hay (6H) in vitro . VIII International Symposium on ruminant Physiology. 25-30 September 1994, Willingen, Germany.Google Scholar