Effects of Horn Fly (Diptera: Muscidae) Control on Cows and Gastrointestinal Worm (Nematode: Trichostrongylidae) Treatment for Calves on Cow and Calf Weight Gains

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Horn flies, Haematobia irritans (L.), at an average population level of 197 per cow, did not significantly affect cow, calf, or cow/calf seasonal weight gains during a 3-yr study in the central sandhills of Nebraska. Cattle aggregation was not influenced by horn fly population levels encountered in this study. Treatment of calves with a anhelmintic drug (thiabendazole) increased calf weight gains significantly despite a helminthic infection without clinical symptoms.

Document Type: Research Article

Publication date: April 1, 1987

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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