Biting flies cause significant welfare harm to livestock through blood loss, pain, disease transmission, and behavioral disruption — effective management improves welfare directly.
Biting insect pressure on livestock is a chronic welfare harm that receives little public attention but affects billions of animals during warm months globally. Heavy fly burden causes constant behavioral disruption, prevents normal grazing and resting, and transmits diseases that cause additional suffering. While fly control is primarily practiced for production reasons, the welfare benefit of reducing fly burden is genuine and significant. Physical barriers, biological controls like dung beetles, targeted treatment systems, and good manure management all reduce fly pressure with varying welfare and environmental costs.