Wool production raises significant welfare issues including mulesing, shearing stress, and flystrike risk. This guide examines the evidence and more welfare-positive approaches.
Mulesing is one of the most contentious welfare issues in sheep production globally. The procedure involves surgically removing strips of wool-bearing skin from the breech area of Merino lambs using sharp shears, creating a smooth scarred area less susceptible to flystrike. Without anaesthesia, the procedure causes intense acute pain — lambs show behavioral pain signs including struggling, vocalizing, and abnormal postures for hours after the procedure.
The welfare justification for mulesing — preventing the severe welfare harm of flystrike — is real. Flystrike causes extraordinary suffering through tissue destruction, toxemia, and, without treatment, death. The mulesing-versus-flystrike welfare tradeoff has driven decades of debate. The emerging consensus is that both harms should be prevented: pain relief at mulesing reduces acute welfare cost, while breeding toward plain-bodied genetics eliminates the long-term need entirely.
Pain relief at mulesing (local anaesthetic and NSAIDs) is now required or strongly recommended in major producing regions. Plastic clip alternatives to surgical mulesing cause less tissue damage. Most powerfully, selective breeding for plain-bodied, low-wrinkle Merinos is reducing flystrike susceptibility while eliminating the welfare justification for mulesing across generations of sheep.