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Journal of Dairy Science Vol. 54 No. 4 540-543
© 1971 by American Dairy Science Association ®
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DDT-14C Metabolism by Rumen Protozoa in Vitro1,2,

A. J. Kutches4 and D. C. Church

Department of Animal Science, Oregon State University, Corvallis 97331

ABSTRACT

Whole rumen liquor and bacterial suspensions actively dechlorinated DDT to DDD. After a 48 hour incubation, 54 and 48% of DDT-14C activity was found as DDD in cell fractions of whole rumen liquor and bacteria. Distribution of DDT-14C activity within protozoal fractions showed the inability of protozoa to convert DDT-14C to DDD. DDT dechlorination in the rumen may be by reductive processes.

FOOTNOTES

1 Technical contribution 2939, Oregon Agricultural Experiment Station.

2 Supported in part by PHS Grant ES 000239.

4 Present address: Department of Animal Sciences, Washington State University, Pullman 99163.






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Copyright © 1971 by the American Dairy Science Association ®.