Horn Fly (Diptera: Muscidae) Control on Beef Cows with Permethrin-Impregnated Ear Tags and Effect on Subsequent Calf Weight Gains
- 1 April 1984
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 77 (2) , 422-424
- https://doi.org/10.1093/jee/77.2.422
Abstract
Permethrin-impregnated ear tags effectively reduced horn flies during the 1981 and 1982 fly seasons by 96 and 99%, respectively. Calves nursing treated cows compared with calves nursing untreated control cows gained 6.7 kg ( P < 0.05) more in 1981 and 4.4 kg ( P <0.01) more in 1982. Calves nursing treated cows were on an average 5.6 kg heavier at weaning time than calves nursing untreated cows during the 2 year study. Analysis of male calf weight gains from late September through mid-November showed that the average increase in nursing gain was not compensated for following the horn fly season.This publication has 6 references indexed in Scilit:
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