06/09/2026
Studies evaluating the economic burden of flies on the United States’ cattle industry show an estimated total loss of over $4 billion annually. The top two contributors to this economic loss were Stable flies and Horn flies. Stable flies had the largest negative impact, estimated at over $2.2 billion in annual loss. Horn flies were ranked as the second most detrimental fly species with over $1 billion in estimated economic annual loss. These evaluations were based on decreased animal production and performance, as well as consequences on animal health and cost of disease treatment. Other fly species that were determined to cause stress and decrease performance in livestock were the House, Face, Horse, Deer, and Heel fly.
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