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Anticoagulant resistance in wild Norway rats in New York

Published online by Cambridge University Press:  15 May 2009

J. E. Brooks
Affiliation:
New York State Department of Health, Bureau of Rodent Control, Rodent Control Evaluation Laboratory, Troy, N.Y. 12180
A. M. Bowerman
Affiliation:
New York State Department of Health, Bureau of Rodent Control, Rodent Control Evaluation Laboratory, Troy, N.Y. 12180
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Wild Norway rats (Rattus norvegicus) from several habitats were tested for their susceptibility and resistance to warfarin. Animals were fed 0·005% warfarin in ground oatmeal for periods varying from 1 to 12 days. Rats having no prior exposure to anticoagulants were shown to be susceptible, none having survived a 6-day feeding period. Resistant rats were found on two farms where anticoagulant materials had been used intensively for about 20 years.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1973

References

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