Sheep Liver Abscess: Welfare Consequences of Ruminal Disease

Key Welfare Facts

Liver abscesses develop when bacteria from ruminal acidosis penetrate the rumen wall and seed the liver.
Affected animals experience pain from hepatic abscesses and may show signs of weight loss and reduced productivity.
Sub-clinical liver abscesses are common in grain-fed animals and are often only detected at slaughter.
Dietary management preventing acidosis is the primary preventive welfare tool for liver abscess formation.
Antibiotic inclusion in feedlot rations has historically reduced liver abscess prevalence with welfare implications.
Veterinary advisory on dietary change management reduces acidosis risk and consequently liver abscess formation.

Welfare Assessment

Liver abscess prevention is fundamentally about preventing ruminal acidosis through good dietary management. Working with a nutritionist to design smooth dietary transitions and appropriate grain inclusion rates reduces both acidosis welfare and liver abscess burden.

What You Can Do

Work with a nutritionist to manage dietary transitions carefully to prevent acidosis
Implement appropriate grain inclusion rates and effective neutral detergent fibre levels in rations
Monitor for signs of sub-acute ruminal acidosis through body condition and faecal scoring
Seek veterinary advice on strategies to reduce liver abscess prevalence in grain-fed beef production