The timing and frequency of shearing has significant welfare implications for sheep. Both over-infrequent shearing (causing heat stress and mobility problems) and poorly timed shearing (exposing sheep to cold) have welfare costs.
Shearing timing represents a genuine welfare trade-off - shearing too early risks cold exposure while delaying risks heat stress, fly strike, and mobility problems. The optimal timing depends on local climate, breed, and management context. Poor shearing technique regardless of timing causes injury and prolonged stress. Post-shearing protection from cold in late-season shearing protects individual sheep from the thermal stress of sudden fleece removal. Well-timed, skilled shearing by trained operators is the welfare-positive approach.