Warfarin-Resistance Genotype Determination in the Norway Rat, Rattus Norvegicus

Author:

Martin A. D.1,Steed Linda C.1,Redfern R.1,Gill J. E.1,Huson L. W.1

Affiliation:

1. Pest Infestation Control Laboratory, Ministry of Agriculture, Fisheries and Food, Hook Rise South, Tolworth, Surbiton, Surrey, KT6 7NF, United Kingdom

Abstract

Summary The 2-stage determination is based on changes in blood coagulation activity brought about both by the administration of warfarin in conjunction with vitamin K1 epoxide and by feeding a vitamin K-free diet for 4 days. When it was applied to laboratory-bred rats of known warfarin-resistance genotype, 35/35 homozygous susceptible, 44/44 homozygous resistant and 131/133 heterozygous rats were correctly classified. This method was equally effective in identifying the genotype of wild rats carrying the warfarin-resistance gene, Rw2. The procedure is rapid and accurate.

Publisher

SAGE Publications

Subject

General Veterinary,Animal Science and Zoology

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