Bovine Respiratory Disease (BRD) is the most costly disease in cattle production, causing significant pain and welfare harm in feedlot and stocker cattle, and prevention through metaphylaxis, vaccination, and stress reduction is more humane than reactive treatment.
BRD causes genuine suffering: cattle with fever and pneumonia breathe with difficulty, stop eating, and stand apart from the herd in obvious distress. Early detection and prompt treatment dramatically improve outcomes — cattle with BRD detected and treated within 24 hours of the onset of signs recover far better than those identified later when severe lung consolidation has occurred. Prevention is preferable to treatment both for welfare and for antimicrobial stewardship: risk-stratified metaphylaxis, pre-shipping vaccination, and stress-reduction management (low-stress weaning, rest periods during transport) reduce BRD incidence without blanket antibiotic use. Pen riders and monitoring systems that detect sick cattle early are among the highest-value welfare investments a feedlot can make.