Bovine Respiratory Disease Complex is the leading cause of illness and death in beef cattle, particularly in feedlots and during transportation stress. It causes significant suffering and substantial economic losses, and its prevention is central to cattle welfare.
Bovine Respiratory Disease causes genuine suffering: affected cattle experience fever, pain, laboured breathing, and systemic illness that can rapidly become fatal if untreated. The disease process is closely linked to management-induced stress — the combination of transportation, mixing with unfamiliar animals, and abrupt weaning creates immune suppression that allows respiratory pathogens to overwhelm defences. The welfare implications are profound: millions of cattle experience respiratory disease each year, and the chronic forms cause weeks of debility before resolution or death. Prevention through low-stress handling, preconditioning calves before sale, and vaccination represents a welfare improvement that also benefits producers through reduced treatment costs and mortality.