Farm Animals

Cattle Liver Fluke Welfare Control

Liver fluke (Fasciola hepatica) causes clinical and subclinical disease in cattle, with welfare impacts including weight loss, anaemia, and death in heavy burdens, requiring integrated control.

Key Facts

Liver fluke requires a mud snail intermediate host in wet pasture conditions
Clinical disease causes bottle jaw, anaemia, and severe weight loss in heavily parasitised animals
Subclinical infection reduces growth rates and milk yield without overt clinical signs
Triclabendazole remains the only flukicide effective against all fluke life stages
Resistance to triclabendazole is emerging in some UK cattle fluke populations

Welfare Considerations

Liver fluke causes preventable suffering from anaemia and weight loss. Integrated control combining flukicide treatment, pasture management, and drainage reduces welfare burden sustainably.

What You Can Do

Implement strategic flukicide treatment based on regional fluke risk forecasts
Test cattle for liver fluke burden before treatment using faecal egg counting
Manage wet pasture areas to reduce snail habitat and fluke transmission
Work with your vet on a fluke control programme that manages resistance risk