Dairy Cattle Transition Period: Metabolic Disease and Welfare (2026)

The transition period (3 weeks before to 3 weeks after calving) is the highest-risk welfare period in the dairy cow's production cycle, with metabolic diseases including ketosis, hypocalcaemia, and displaced abomasum causing severe suffering.

Key Facts

Up to 50% of dairy cows in high-producing herds experience sub-clinical ketosis in the first weeks after calving
Hypocalcaemia (milk fever) causes recumbency, paralysis, and cardiovascular failure in severely affected cows
Displaced abomasum (twisted stomach) requires surgical correction and causes prolonged anorexia and pain
Transition cow welfare is directly linked to nutritional management, housing design, and stocking density in late gestation

Welfare Considerations

Cows with clinical ketosis experience anorexia, weakness, and neurological signs causing the typical 'nervous ketosis' or simple production decline over weeks. The energy deficit of early lactation is extreme in high-producing cows whose milk production far exceeds their voluntary dry matter intake. Hypocalcaemia causes rapid-onset recumbency that is life-threatening without rapid treatment. Displaced abomasum surgery is performed under local anaesthesia in standing cows — a significant painful procedure. Prevention through nutritional management is far preferable to treatment for these metabolic conditions.

What You Can Do

Implement a structured transition cow nutrition programme including body condition score monitoring
Ensure adequate pen space in close-up dry cow accommodation to allow access to feed and reduce stress
Monitor fresh cow health using milk ketone testing in the first 2 weeks after calving
Treat clinical metabolic disease promptly with appropriate veterinary intervention and supportive care