Studies on rodenticides (I) : Feeding preference of Norway rats on dry baits with various materials and forms

Ogushi Koji, Tokumitsu Iwao

doi:10.7601/mez.21.107

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Other Title

殺そ剤に関する研究 I : 殺そ剤固型餌の材料および形によるドブネズミの摂食嗜好性
殺そ剤に関する研究-1-殺そ剤固型餌の材料および形によるドブネズミの摂食嗜好性
サッソザイニカンスルケンキュウ 1 サッソザイコケイジノザイリョウオヨビカタチニヨルドブネズミノセッショクシコウセイ

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Abstract

Laboratory observations were carried out with a colony of Norway rat, Rattus norvegicus, on the amount of consumption of various forms and compositions of dry baits to be used as the base of rodenticides. The animals used were a laboratory colony which had been bred and maintained by us from commensal rats. The feeding preference was tested by comparing the amount of consumption of two different kinds of baits set at the same time in a cage, and the position of baits were frequently changed alternatively so as to eliminate the effects of place preference. As the results, it was demonstrated that the rats preferred wheat flour to corn meal; the addition of fish meal at a rate of 1% or less as well as that of rice bran to 5% or less to the bait did not cause significant differences in the amount of food consumption; baits incorporated with 3 to 6% of vegetable oil were highly preferred by the rats, while liquid paraffine had no such effect; the addition of a synthetic sweetener sodium cyclohexylsulfamate also did not enhance the food consumption. As to the forms of the dry baits, cylinder type was preferred to biscuit type, and cylinder type baits of 0.4 to 0.5g in weight was found to be best preferred.

Journal

Medical Entomology and Zoology

Medical Entomology and Zoology 21 (2), 107-111, 1970

The Japan Society of Medical Entomology and Zoology

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