How weaning causes acute stress in beef and dairy cattle, and evidence-based management approaches that reduce suffering for both cows and calves.
Weaning stress in cattle is inevitable given the conflict between natural weaning timelines and commercial production requirements, but its severity is highly management-dependent. Complete and sudden separation — the conventional approach — produces the most intense and prolonged distress. Two-stage approaches that maintain social contact while preventing nursing substantially reduce distress indicators. Fence-line contact allows calves to see, smell, and hear their mothers while preventing nursing — a meaningful welfare improvement over complete separation. These approaches have no significant production cost and represent a clear welfare improvement with minimal implementation barriers.