Cattle Ketosis Management: Metabolic Welfare in Dairy Transition Cows

Ketosis is the most common metabolic disease in dairy cows, occurring when energy demands of early lactation exceed intake, causing significant welfare impacts and production losses.

Key Facts

Ketosis affects 40-60% of dairy cows to some degree in the first weeks after calving in high-producing herds
It results from negative energy balance when the cow mobilises body fat faster than her liver can process it, producing ketone bodies
Clinical ketosis causes lethargy, reduced feed intake, sweet-smelling breath (from acetone), and production drops
Subclinical ketosis — detected only by blood or urine testing — is far more common and associated with increased risk of other diseases
Treatment involves propylene glycol drenching, intravenous glucose, and in severe cases, corticosteroids
Dry cow management — controlling body condition score and transition diet — is the most effective prevention strategy

Welfare Considerations

Ketosis causes genuine metabolic suffering: cows in severe negative energy balance experience profound weakness, nausea, and mental dullness. Hepatic lipidosis (fatty liver) developing alongside ketosis causes organ dysfunction that impairs recovery. The condition represents a welfare failure of the transition period — the most physiologically stressful period in the dairy cow lifecycle. High-producing dairy breeds have been selected for milk output that outpaces natural energy balance capacity, making ketosis an inherent risk of modern dairy genetics. Prevention through precision transition nutrition — monitoring body condition, managing pre-calving dry matter intake, and providing high-quality energy-dense feeds — is both economically and welfare-positive.

What You Can Do

Implement a transition cow monitoring programme including body condition scoring and blood ketone testing in the first two weeks after calving
Work with a nutritionist to optimise pre-calving diet and minimise over-conditioning that worsens post-calving ketosis risk
Use on-farm ketone testing (Keto-Test strips or electronic meters) to identify subclinical ketosis early for prompt intervention
Apply propylene glycol preventively to high-risk cows identified by body condition or previous history
Advocate for dairy breeding programmes that balance milk production genetics with metabolic disease resistance