Sheep Welfare and Pneumonia Management in Indoor Systems

Ovine respiratory disease is a significant welfare and economic problem in housed sheep, with ventilation and stocking density as primary management levers.

Key Facts

Pneumonia causes significant mortality in housed sheep, particularly lambs under 12 weeks
Mannheimia haemolytica and Pasteurella multocida are primary bacterial pathogens
Inadequate ventilation and high humidity are primary risk factors in housed systems
Vaccination against Pasteurellosis provides significant protection in high-risk flocks
Early detection through clinical examination reduces severity and spread

Welfare Considerations

Ovine respiratory disease causes severe welfare compromise through fever, respiratory distress, and weight loss. Animals with pneumonia experience significant pain and distress that worsens rapidly without treatment. Preventive management through adequate ventilation, appropriate stocking density, and vaccination is highly effective. Early detection through regular clinical examination and prompt treatment with appropriate antibiotics substantially reduces suffering and mortality.

What You Can Do

Ask farm veterinarians to assess ventilation adequacy in housed sheep systems
Support vaccination programmes against Pasteurellosis in high-risk flocks
Encourage early detection training for stockpersons handling housed sheep
Advocate for adequate air space allowances in sheep housing design standards