Dairy cows form strong social bonds that are frequently disrupted by management practices. Understanding the welfare cost of social disruption supports advocacy for more welfare-positive herd management.
Social welfare in dairy cattle is an underappreciated dimension of farm animal wellbeing. The disruption of social bonds through frequent regrouping, calf separation, and large herd anonymity creates chronic social stress that elevates cortisol, reduces feeding efficiency, and impairs immune function. Stable group management that minimises regrouping, allowing bond formation and maintenance, significantly improves welfare indicators. Calf separation - whether immediate or delayed - causes acute distress for both cow and calf. Extended contact systems that delay separation and allow natural weaning represent welfare progress, even if they require adjustment to milking systems.