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Suspected cresol poisoning in cattle presented for slaughter
Khadim Hussain1, Enzo R Campagnolo
1United States Department of Agriculture, Food Safety Inspection Service Field Operations, Chicago District Office, Lombard, Illinois 60148, USA.
Veterinary and Human Toxicology
|February 5, 2002
Summary
Cresol poisoning caused sudden death in cattle. Metacresol, a disinfectant chemical, was found in the rumen of affected animals, suggesting accidental exposure on the farm or during transport.
Area of Science:
- Veterinary Toxicology
- Animal Pathology
Background:
- Cresol poisoning is a potential risk in livestock.
- Accidental exposure can occur through contaminated environments or transport vehicles.
Purpose of the Study:
- To investigate the cause of sudden death in cattle presented for slaughter.
- To identify potential toxicants responsible for observed clinical signs and mortality.
Main Methods:
- Clinical examination of affected cattle.
- Necropsy and toxicological analysis of rumen contents.
- Detection of metacresol (3-methyl phenol) using chemical analysis.
Main Results:
- Four cattle died suddenly post-unloading; one died after returning to the feedlot.
- Clinical signs included lethargy, ataxia, dehydration, and severe bloating.
- Metacresol detected in rumen contents (25.3–52.6 ppm) of four necropsied cattle.
Conclusions:
- Metacresol poisoning is the likely cause of mortality in the affected cattle.
- Accidental exposure likely occurred on the farm of origin or during transport.
- Further investigation into farm biosecurity and transport sanitation is recommended.