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Suspected botulism in cattle associated with poultry litter
The Veterinary Record
|May 12, 1990
Summary
Clinical botulism in cattle was linked to poultry carcasses contaminated with Clostridium botulinum types C and D. Silage may have facilitated toxin or organism spread to housed animals.
Area of Science:
- Veterinary Medicine
- Microbiology
- Animal Toxicology
Background:
- Botulism is a serious neurotoxic disease affecting livestock.
- Dairy cattle are susceptible to botulism, impacting herd health and productivity.
Observation:
- Clinical botulism was diagnosed in grazing cattle across three adjacent dairy farms.
- Affected animals showed symptoms consistent with botulism.
- Poultry carcasses containing Clostridium botulinum types C and D were identified as the likely source of the toxin.
Findings:
- Clostridium botulinum types C and D were isolated from the alimentary tract of affected cattle.
- Silage was suspected as a potential vehicle for Clostridium botulinum organisms or toxins.
- This vehicle role was particularly noted in housed cattle experiencing later-onset cases.
Implications:
- Understanding the source and transmission routes of botulism is crucial for prevention in cattle.
- Implementing biosecurity measures, including proper carcass disposal, can mitigate botulism outbreaks.
- Further investigation into silage as a vehicle for Clostridium botulinum may inform feed management strategies.