J. Anim Sci.
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J. Anim Sci. 1981. 53:1159-1165.
© 1981 American Society of Animal Science
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Use of Insecticide-Impregnated Ear Tags for the Control of Face Flies and Horn Flies on Pastured Cattle1

R. E. Williams2, E. J. Westby2, K. S. Hendrix3 and R. P. Lemenager3

Purdue University, West Lafayette, IN 47907

Abstract

Three studies were conducted to evaluate the effectiveness of insecticide-impregnated ear tags in controlling face flies, Musca autumnalis DeGeer, and horn flies, Haematobia irritans (Linn.), on pastured beef cattle. In one 16-week trial, polyvinyl chloride (PVC) ear tags treated with stirofos (Rabon®) insecticide reduced horn fly numbers by 79% (P<.05) and face fly numbers by 30% (P<.05). Coumaphos (CoRal®) insecticide dust bags used in a separate herd produced an 86% (P<.05) reduction in horn flies and an 18% (P>.05) reduction in face flies. In the second study, 5 and 10% permethrin (Atroban®), PVC-treated ear tags in a one-piece design were tested. In this 11 week trial, horn fly control averaged 95% (P<.05) with the 10% tag and 77% (P<,05) with the 5% tag. Face fly control averaged 49% (P<.05) for 8 weeks with the 10% permethrin tag. No significant face fly control was achieved with the 5% permethrin tag. In a herd treated with coumaphos dust bags, horn fly control averaged 93% (P<.05) and face fly control averaged 34% (P>.05). The third study tested 5 and 10% permethrin, PVC-treated ear tags in a two-piece design and two-piece 5% permethrin-treated ear tags in a polyurethane matrix. Fourteen-week horn fly control averaged 88% (P<,05) with the 10% PVC-treated tag, 83% (P<.05) with the 5% PVC-treated tag, 71% (P>.05) with the 5% polyurethane-treated tag and 74% (P<.05) with coumaphos dust bags. Face fly control averaged less than 50% (P>.05) throughout the trial with all treatments.

Footnotes

1 Contribution from the Dept. of Entomology, Journal Paper No. 8088, Purdue Univ. Agr. Exp. Sta., West Lafayette, IN 47907.

2 Dept. of Entomol

3 Dept. of Anim. Sci.






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Copyright © 1981 by the American Society of Animal Science.