The transition period — 3 weeks before and after calving — is the most metabolically challenging phase of the dairy cow's year, with nutrition management directly determining welfare outcomes for the subsequent lactation.
Transition cow welfare is a systems problem: the cascade of metabolic diseases that occurs in early lactation reflects the compounding effect of multiple nutritional and physiological challenges that interact across a 6-week period. Hypocalcaemia at calving — even subclinical — impairs smooth muscle function, reducing ruminal motility and predisposing to displaced abomasum, retained placenta, and uterine infection. Each complication adds to the welfare burden and increases the probability of subsequent complications. The preventive approach to transition cow welfare requires thinking in systems: not just treating individual diseases but managing nutrition, body condition, social stress, and housing quality across the transition period as an integrated welfare programme. Farms with the best transition cow welfare outcomes combine appropriate pre-calving body condition (2.5-3.0), controlled energy intake in the close-up period, fresh cow monitoring protocols that detect early disease before it progresses, and prompt treatment when disease is identified. The 21-day post-calving monitoring period — during which the most significant disease events occur — should be a structured daily observation commitment rather than reactive management.