Mulesing, the surgical removal of skin around the breech of Merino sheep, is a highly contested welfare procedure; alternatives including selective breeding and chemical prevention are advancing.
Mulesing creates a difficult welfare trade-off — a painful procedure performed to prevent a painful disease. This dilemma has driven significant investment in alternatives. Selective breeding for plain-bodied Merino genetics reduces inherent flystrike susceptibility and represents the most sustainable long-term solution. Chemical prevention using insecticides provides seasonal protection, though raises environmental concerns. Improved monitoring and early intervention programs can catch strikes before they cause severe suffering. Pain relief during and after mulesing, now increasingly mandated in Australia, substantially reduces the welfare cost of the procedure where it remains necessary during the transition period. The direction of travel is clearly toward elimination of mulesing as alternatives mature.