By Ralph E. Williams, entomologist, Purdue University
Fly Control in Confined Livestock Operations
Of flies occurring in livestock confinement operations, including feedlots, dairies, swine, and sheep, of most concern are stable flies, Stomoxys calcitrans, and house flies, Musca domestica. Control of these two flies follows similar techniques.
Surveillance/Diagnosis: Both stable flies and house flies can cause annoyance to livestock. Stable flies feeding on livestock, especially on the legs, causes foot stomping, tail swishing, animal bunching, and nervousness. Excessive house fly populations can also alter animal behavior. Animals become reluctant to feed with high numbers of house flies present around feeders, and animals often bunch together to avoid fly activity. Observing animal behavior can be an indication for the need for fly control.
Monitoring fly activity can be accomplished in several ways. The use of light traps, baited fly traps, sticky ribbons, and spot (fly speck) cards are useful in monitoring fly activity, especially house flies inside buildings. … Continue readingRead More »