Cattle Calf Scour Rehydration and Welfare Protocols

Oral rehydration therapy is the cornerstone of treating neonatal calf diarrhoea and preventing death from dehydration and acidosis. Simple, farm-administered protocols save lives when applied early, reducing suffering and mortality without requiring veterinary attendance for every case.

Key Facts

Calves lose 8 to 10 per cent of body weight in fluids within 24 hours of severe diarrhoea onset
Acidosis from bicarbonate loss in diarrhoea, not the infection itself, causes most scour-related deaths
Commercial electrolyte solutions containing sodium, potassium, chloride, bicarbonate, and glucose correct the biochemical deficits that kill scouring calves
Milk should not be withheld from scouring calves — continued feeding alongside electrolytes reduces intestinal damage and speeds recovery
Intravenous fluid therapy is required for calves that are recumbent or unable to swallow — oral therapy is ineffective in this group

Welfare Considerations

Scouring calves that do not receive prompt fluid support experience progressive weakness, sunken eyes, cold extremities, and loss of consciousness as dehydration and acidosis advance. This deterioration is preventable with early recognition and oral electrolyte administration. Welfare-centred calf management includes farm staff training to assess dehydration using skin turgor and suckle reflex tests, stockpiles of appropriate electrolyte products on-farm, and clear written protocols specifying when to escalate to veterinary intravenous therapy. Twice-daily calf health monitoring during the first two weeks of life catches cases before they reach severe dehydration.

What You Can Do

Train all calf-care staff in practical dehydration assessment using the skin tent test and suckle reflex evaluation
Stock appropriate commercial calf electrolyte solutions and ensure staff know the correct mixing and dosing instructions
Never withhold milk from a scouring calf — feed electrolytes in addition to, not instead of, the normal milk ration
Implement twice-daily health monitoring for all calves in the first two weeks of life using a standardised health scoring chart
Establish a clear escalation protocol specifying the dehydration score and recumbency thresholds that require emergency veterinary intravenous fluid therapy