Sheep Housing Stress in Late Gestation: Welfare and Management (2026)

Ewes in late pregnancy are housed in many UK flocks for monitoring and protection, with welfare challenges around crowding, feed access, and social stress that can compromise both ewe and lamb welfare.

Key Facts

UK indoor lambing systems house ewes for the last 6-8 weeks of gestation in group pens
Recommended stocking densities for late-pregnancy ewes are 1.2-1.5 m2 per ewe — frequently exceeded in practice
Feed access is critical in late gestation — subordinate ewes displaced from troughs develop nutritional deficiencies causing twin lamb disease
Housing stress elevates cortisol, which can reduce colostrum quality and impair newborn lamb immune function

Welfare Considerations

Overcrowded late-gestation ewes cannot rest comfortably — heavily pregnant animals need adequate space to lie and rise without disturbing pen mates. Trough competition excludes subordinate ewes from adequate nutrition, causing ketosis and hypocalcaemia. Ewes stressed during late gestation show reduced maternal behaviour at lambing, increasing the risk of mismothering and lamb rejection. Social stress in housing may impair colostrum immunoglobulin concentration, reducing lamb passive immunity. Good stockmanship and appropriate housing design prevent most of these welfare failures.

What You Can Do

Ensure adequate trough space (minimum 45cm per ewe) and ad lib roughage to reduce competition stress
Identify and separately house thin or low-ranking ewes that may not compete effectively at the trough
Maintain stocking densities within recommended limits and avoid overloading pens in the final weeks of gestation
Monitor ewes for signs of twin lamb disease (hypoglycaemia, ketosis) through body condition scoring and behavioural assessment