Show simple item record Newbold, C. J. El Hassan, S. M. Wang, J. Ortega, M. E. Wallace, R. J. 2013-07-13T04:17:02Z 2013-07-13T04:17:02Z 1997-08
dc.identifier.citation Newbold , C J , El Hassan , S M , Wang , J , Ortega , M E & Wallace , R J 1997 , ' Influence of foliage from African multipurpose trees on activity of rumen protozoa and bacteria ' British Journal of Nutrition , vol 78 , no. 2 , pp. 237-249 . DOI: 10.1079/BJN19970143 en
dc.identifier.issn 0007-1145
dc.identifier.other PURE: 1890872
dc.identifier.other PURE UUID: 426e6eda-56d9-4034-9b5e-d40a4ee463ae
dc.identifier.other WOS: A1997XQ75300006
dc.identifier.other Scopus: 0343852704
dc.identifier.other 2160/9371
dc.description Newbold, C. J., El Hassan, S. M., Wang, J., Ortega, M. E., Wallace, R. J. (1997). Influence of foliage from African multipurpose trees on activity of rumen protozoa and bacteria. British Journal of Nutrition, 78 (2), 237-249. en
dc.description.abstract Samples and extracts of foliage from African multipurpose trees were screened for their effects on rumen protozoa and bacteria with a view to predicting their safety as feed supplements and for identifying species with potential antiprotozoal activity. The species tested were Acacia aneura, Chamaecytisus palmensis, Brachychiton populneum, Flindersia maculosa, Sesbania sesban, Leucaena leucocephala and Vernonia amyedalina. Antimicrobial effects were mild except for S. sesban, which was highly toxic to rumen protozoa in vitro, and A. aneura, which was toxic to rumen bacteria. The antiprotozoal factor in S. sesban was apparently associated with the fraction of the plant containing saponins. When S. sesban was fed to sheep, protozoal numbers fell by 60 % after 4 d, but the population recovered after a further 10 d, in vitro experiments demonstrated that washed protozoa from later times were no more resistant to S. sesban than on initial exposure, suggesting that other micro-organisms, probably the bacteria, adapted to detoxify the antiprotozoal agent. Thus S. sesban may be useful in suppressing protozoa and thereby improving protein how from the rumen, but only if the bacterial metabolism of the antiprotozoal factor can be avoided. en
dc.format.extent 13 en
dc.language.iso eng
dc.relation.ispartof British Journal of Nutrition en
dc.rights en
dc.subject rumen en
dc.subject BOVINE RUMEN en
dc.subject protozoa en
dc.subject ACIDS en
dc.subject defamation en
dc.subject INVITRO en
dc.subject DEGRADATION en
dc.subject GROWTH en
dc.subject METABOLISM en
dc.subject SHEEP en
dc.subject FERMENTATION en
dc.title Influence of foliage from African multipurpose trees on activity of rumen protozoa and bacteria en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.contributor.institution Department of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en

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