Hypothermia is the leading cause of lamb mortality worldwide, making its prevention through management, environment, and husbandry a critical sheep welfare priority.
Hypothermia causes suffering through progressive weakness, inability to stand or suckle, and eventual cardiovascular collapse. The welfare significance is amplified by the scale: billions of lambs are born annually worldwide in conditions that risk hypothermia. Effective prevention through lambing pen design, supervision intensity, breed selection for mothering ability, and shepherd skill significantly reduces this major welfare burden.