Mulesing — surgical removal of breech skin in Merino sheep — is a painful procedure conducted to prevent flystrike; humane alternatives are commercially viable but adoption has been slow.
Mulesing is one of the most controversial welfare practices in the sheep industry. It causes significant acute pain and the wounds take weeks to heal, during which time lambs experience chronic pain. The procedure is conducted in lambs 2-12 weeks old. While mulesing does reduce flystrike risk, it does not eliminate it, and alternatives are available: breech clips, selective breeding for plain-bodied sheep, chemical treatments, and improved pasture management all address flystrike risk without surgical mutilation. Pain relief (local anesthesia, NSAIDs) for mulesing is now more widely practiced in Australia but is still not universal. Consumer-led demand for non-mulesed wool certifications (ZQ Merino, Responsible Wool Standard) has increased pressure for change.