The strength of the maternal bond between cows and calves, and the distress caused by separation, is one of the most documented welfare problems in dairy production.
The separation of dairy calves from their mothers is one of the most clear-cut and well-documented welfare harms in animal agriculture. Multiple studies have measured the physiological and behavioral distress of both cows and calves following separation. Vocalizations, searching behavior, reduced feed intake, and elevated stress hormones all document the reality of distress. Extended cow-calf contact systems, in which calves nurse for weeks or months before weaning, are emerging as a higher welfare alternative but remain rare in commercial production. The welfare improvement possible through extended contact represents a significant opportunity for the dairy industry to address a well-documented harm.