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Control of tick (Acari: Ixodidae) infestation by application of ear tags impregnated with acaricides to cattle in Africa

Published online by Cambridge University Press:  10 July 2009

A. S. Young ,
J. J. De Castro  and
P. P. Kiza-Auru
A. S. Young
Affiliation:
Veterinary Research Department, Kenya Agricultural Research Institute, Muguga, P. 0. Box 32, Kikuyu, Kenya
J. J. De Castro
Affiliation:
International Centre of Insect Physiology & Ecology, P.O. Box 30772, Nairobi, Kenya
P. P. Kiza-Auru
Affiliation:
Intona Ranch Ltd., P.O. Box 76, Kilgoris via Kisii, Kenya
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Abstract

Nine types of plastic ear tags impregnated with organophosphorus, amidine or synthetic pyrethroid compounds were applied to both ears of groups of five Maasai zebu cattle in Narok District, Kenya, and grazed together with five untagged cattle to which no acaricides were applied. Most of the tag types gave highly efficient control of Rhipicephalus appendiculatus Neumann attaching to the head and ears of the cattle, which lasted up to 160 days after application and often completely prevented tick engorgement. All the chemical groups were effective. The most effective tag was a combination of amitraz and permethrin which gave better control than either chemical on its own. Control of Boophilus decoloratus (Koch), Amblyomma cohaerens Dönitz, A. variegatum (F.) and R. evertsi evertsi Neumann attaching to the bodies of cattle was less effective, although most of the tags exerted some effect. Rainfall appeared to reduce the degree of control by the tags. A role for such impregnated ear tags for the control of cattle ticks in Africa is suggested.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 75 , Issue 4 , December 1985 , pp. 609 - 619
Copyright
Copyright © Cambridge University Press 1985

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