The separation of dairy calves from their mothers is one of the most emotionally significant welfare events in dairy farming.
Separation causes acute and prolonged distress in both mother and calf. Cows show elevated cortisol, reduced feeding, and persistent calling for up to a week. Calves separated early have higher disease rates and poorer immune responses. The grief-like behavior of dairy cows separated from calves has been extensively documented. Some farms are experimenting with extended mother-calf contact systems.