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Warfarin susceptibility in the lesser bandicoot rat (Bandicota bengalensis)

Hussain, I. and Prescott, C. (2003) Warfarin susceptibility in the lesser bandicoot rat (Bandicota bengalensis). In: Singleton, G. R., Hinds, L. A., Krebs, C. J. and Spratt, D. M. (eds.) Rats, Mice and People: Rodent Biology and Management. Monograph Series (MN096). Australian Centre for International Agricultural Research, Canberra, Australai, pp. 465-468. ISBN 1863203567

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Warfarin is a first generation anticoagulant that relies on multiple feeding events to achieve lethality in susceptible rodents. For the Bandicoot rat, warfarin susceptibility baselines were established using the lethal feeding period (LFP) test methodology. Against a 0.003% warfarin formulation, LFP50 values of 2 and 4 days, and LFP99 values of 16 and 10 days were obtained for males and females respectively. However, consumption of rodenticide was significantly reduced after the 4th and 5th days of test, at a time when animals would be expected to experience symptoms of warfarin toxicity. This would seriously compromise the Probit analysis, particularly for estimates of higher percentiles. Possible modifications to the methodology are discussed to overcome this problem. Although the majority of animals were highly susceptible to warfarin, one female animal that survived a high dose of active ingredient (79.1 mg kg-1) may bode for future resistance

Item Type:Book or Report Section
Divisions:Life Sciences > School of Biological Sciences > Ecology and Evolutionary Biology
ID Code:27508
Additional Information:The Monograph was published by ACIAR to coincide with the 2nd international Conference on Rodent Bioilogy and Management, Canberra, Australia, 10-14 February 2003.
Publisher:Australian Centre for International Agricultural Research
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