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Journal of Dairy Science Vol. 59 No. 3 455-458
© 1976 by American Dairy Science Association ®
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Growth and Morphology of Streptococcus bovis and of Mixed Rumen Bacteria in the Presence of Aflatoxin B1, In Vitro

Carolyn F. Mathur1, R. C. Smith and G. E. Hawkins

Department of Animal and Dairy Sciences, Auburn University Agricultural Experiment Station, Auburn, AL 36830

ABSTRACT

The metabolism of aflatoxin B1 to other fluorescent compounds was studied in rumen organisms. No fluorescent metabolites were found by chromatographic procedures which separate aflatoxin B1 from them. Rumen bacteria (mixed cultures and Streptococcus bovis) incubated with aflatoxin B1 grew in long chains whereas cells in control cultures were mainly doublets with some short chains. Growth of mixed rumen bacteria and Streptococcus bovis cultures was inhibited by aflatoxin B1 as measured by change in optical density and by incorporation of [carbon-14] adenine into nucleic acids.

FOOTNOTES

1 Department of Biology, Millersville State College, Miilersville, PA 17551.






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Copyright © 1976 by the American Dairy Science Association ®.