Year-end Sale % OFF 
Abstract
Abstract Eight beef cattle cow-calf herds were treated for fly control during the first 2 wk of Jun with Ectiban permethrin (0.9 g AI) ear tag tapes or Durmectostrips (8% AI cypermethrin plastic strips) attached to the shank portion of identification ear tags. Cows and calves were treated with different numbers of tapes or strips as described in the below table. Two similar herds of beef cattle were used as untreated checks. On Sep 9, 2 beef cattle cow-calf herds were tagged with either 10% bendiocarb or 10% Delnav dioxathion ear tags. Cows were tagged with Delnav tags at 2/hd and cows and calves were tagged with bendiocarb tags at 2/hd. A similar herd of beef cattle on a free choice use of a 2% malathion backrubber was used as a standard comparison. Face fly and horn fly counts were made on 10 cows in each treatment before treating and at regular post treatment intervals.
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