Livestock

Twin Lamb Disease Prevention: 2025 Welfare Update

Updated guidance on preventing pregnancy toxaemia in twin-bearing ewes to protect welfare.

Key Facts

Pregnancy toxaemia (twin lamb disease) kills ewes and their lambs without prompt treatment
Twin-bearing ewes in the last 6 weeks of pregnancy have metabolic demands that can outstrip energy supply
Body condition score at tupping determines risk — too thin is high risk
Early treatment with propylene glycol and supportive care saves lives

Welfare Considerations

Pregnancy toxaemia causes progressive neurological deterioration — ewes become dull, collapse, and die without intervention. Welfare-focused prevention uses body condition scoring at tupping to identify thin ewes and condition them appropriately, ultrasound scanning to identify twin-bearing ewes, and targeted supplementary feeding in the final 6 weeks. Prompt recognition and treatment of early cases saves welfare.

What You Can Do

Score body condition at tupping — ensure ewes are in good condition before mating
Ultrasound scan ewes to identify twin-bearers and target supplementary feeding appropriately
Recognise early signs of pregnancy toxaemia and treat promptly with propylene glycol and veterinary support