The approach to ward off flies is multipronged and challenging. However, doing nothing can severely hinder productivity, profits and herd welfare. I’ve asked Dr. Nancy Hinkle, extension veterinary entomologist at the University of Georgia, to give her tips on horn fly control for the Southeast.

Treatment of horn flies is important from both an economic and animal welfare standpoint. On average, horn flies have been shown to reduce average daily gain (ADG) in stocker cattle and replacement heifers by 13.6 percent or about 0.2 pound per day.

External parasites can be costly for cattle producers and getting a handle on problems early can lead to more prosperous and better performing cows.