Dairy Cow Transition Period and Metabolic Disease Welfare

The transition period — three weeks before and after calving — is the most welfare-critical phase of the dairy cow cycle, with multiple metabolic diseases peaking during this window.

Key Facts

Metabolic diseases including milk fever, ketosis, displaced abomasum, and retained foetal membranes all peak in the transition period
Ketosis affects 20-40% of dairy cows in some herds during the first weeks after calving
Negative energy balance, when cows cannot eat enough to meet milk production demands, drives most transition disease
Transition cow nutrition management — maximising dry matter intake around calving — dramatically reduces disease incidence
Cows with transition disease are at higher risk of early culling, perpetuating the longevity and welfare problem

Welfare Considerations

The transition period concentrates the most severe welfare insults of the dairy cow cycle into a single narrow window. Milk fever, ketosis, mastitis, metritis, and lameness all increase in incidence in the weeks around calving, when the cow's physiology undergoes the greatest demands. Cows with multiple concurrent transition diseases experience compounded suffering and dramatically reduced welfare. Transition management programmes — appropriate pre-calving nutrition, body condition management, and monitoring — have been shown to reduce disease incidence by 50% or more in some herds, representing enormous aggregate welfare improvement across thousands of individual cows each year.

What You Can Do

Support dairy farms with documented transition period health monitoring and low disease incidence
Advocate for transition disease rates as mandatory welfare reporting metrics in dairy certification
Choose dairy products from farms with accredited welfare schemes that include metabolic disease monitoring
Engage with research on transition cow nutrition to support evidence-based welfare improvement at industry scale