Tolerance shown by Rattus rattus to an anticoagulant rodenticide
[Article]
Deoras, P. J.; Chaturvedi, G. C.; Vad, N. E.; Renapurkar, D. M.
Apart from using 0.005% concentration, the recommended field dose of 0.025% of the anticoagulant is used along with an alternate food for individual rats for a varying number of days. Those that had survived were taken as tolerant, provided they showed an mg/kg intake beyond the tolerance limit, survived a six days of feeding, exhibited bait-shyness, and did not exhibit hemorrhage after death. In determining the criteria for tolerance to an anticoagulant by a rat, one should take into account four composite factors. These are, six days of even 0.025% feeding, bait-shyness when alternate food is given, higher mg/kg intake than the tolerance level, and a loss of intensive hemorrhage after death.
1972
Proceedings of the Vertebrate Pest Conference
5
Deoras, P. J.; Chaturvedi, G. C.; Vad, N. E.; Renapurkar, D. M.