Farm Animal Welfare

Sheep Blackleg Clostridial Vaccination

Blackleg and other clostridial diseases cause sudden death in sheep. Vaccination is highly effective, inexpensive, and a fundamental welfare protection.

Key Facts

Clostridium chauvoei causes blackleg in sheep
Disease typically affects well-nourished animals under 2 years of age
Death can occur within hours of clinical signs appearing
The 7-in-1 and 8-in-1 vaccines protect against multiple clostridial diseases
Initial course requires two doses; annual boosters maintain protection

Welfare Considerations

Clostridial diseases cause sudden, painful death - animals that were well the day before are found dead, or die despite emergency treatment. Because vaccination is so effective, cheap, and safe, unvaccinated sheep dying from clostridial disease represent entirely preventable suffering. Vaccination is a fundamental welfare responsibility for sheep keepers.

What You Can Do

Vaccinate all sheep against clostridial diseases with the primary course
Maintain annual boosters for all stock
Ensure recently purchased animals are vaccinated
Advise beginning sheep keepers about the importance of clostridial vaccination