Clostridial Disease in Sheep: Welfare and Prevention
A welfare-focused guide to clostridial diseases in sheep, including enterotoxaemia, pulpy kidney, and tetanus, with emphasis on prevention through vaccination.
Key Facts
Clostridial diseases cause sudden, severe, and often fatal illness in sheep — enterotoxaemia (pulpy kidney) is the most common, killing well-nourished lambs rapidly and painfully.
Death from clostridial diseases is preceded by severe abdominal pain, convulsions, and distress — affected animals suffer intensely in their final hours.
Seven-in-one (7-in-1) clostridial vaccines are highly effective and inexpensive — vaccination is the single most impactful intervention for preventing this suffering.
Unvaccinated flocks can suffer 5-20% mortality during outbreaks — this is entirely preventable with appropriate vaccine programs.
Tetanus in sheep causes progressive muscle rigidity, inability to eat, and death — it is particularly common after castration, tail docking, and shearing injuries.
Lamb vaccination programs require two doses 4-6 weeks apart, then annual boosters — colostrum from vaccinated ewes provides passive protection to newborn lambs.
UK surveys show 15-20% of sheep farms still have suboptimal vaccination compliance, leaving significant preventable suffering on those farms.
Welfare Considerations
Clostridial diseases kill sheep painfully and are almost entirely preventable. Every unvaccinated sheep is at unnecessary risk. Ensuring complete vaccination coverage across all sheep is one of the most cost-effective welfare interventions available to farmers. Farm advisors and vets should prioritize vaccination compliance in all farm health plans.
What You Can Do
Ensure all sheep receive complete 7-in-1 clostridial vaccination with annual boosters
Vaccinate ewes before lambing to ensure maximum colostrum antibody transfer to lambs
Support farm vet health planning that includes vaccination compliance auditing
Advocate for subsidized veterinary consultations that include vaccination strategy for small flock holders