Bovine Respiratory Disease Prevention: Vaccines, Management, and Arrival Protocols

Bovine respiratory disease is the most costly disease in beef cattle production and a major welfare concern in feedlots and intensive systems, with prevention through vaccination and management far preferable to treatment.

Key Facts

Bovine respiratory disease (BRD) accounts for approximately 75% of illness and 50% of death loss in feedlot cattle, with annual US costs estimated at over $1 billion.
It is a multifactorial disease: transport stress, commingling of calves from different sources, weaning, nutritional transition, and pathogen exposure interact to cause respiratory compromise.
Key pathogens include Mannheimia haemolytica, Pasteurella multocida, Histophilus somni (bacteria) and bovine herpesvirus-1, BRSV, BVDV, and PI-3 (viruses).
Modified live virus vaccines against viral pathogens, administered pre-weaning or at processing, significantly reduce disease incidence.
Arrival processing programs — vaccination, antiparasitic treatment, metaphylactic antimicrobial treatment — at feedlot entry reduce peak disease incidence at highest-risk periods.
Cattle that experience BRD have impaired growth, reduced feed efficiency, and in survivors of severe disease, chronic lung damage (the "chronic" or "lunger" category).
Early detection through twice-daily pen observation by trained pen riders or automated monitoring systems allows prompt treatment of early cases with better welfare outcomes.

Welfare Considerations

BRD causes significant suffering across its clinical spectrum. Mild cases cause fever, reduced appetite, and respiratory discomfort; severe cases involve profound dyspnea (labored breathing), extreme weakness, and without treatment, progressive lung necrosis and death. Chronic cases that survive acute disease with severely damaged lungs endure ongoing respiratory compromise and poor welfare throughout the remainder of their production lives. The scale of BRD impact — affecting millions of cattle annually — makes even modest prevention improvements highly welfare-significant. Prevention through timely vaccination, stress minimization, and management protocols that reduce commingling of high-risk animals is dramatically more welfare-effective than treatment of established disease. A culture of proactive prevention rather than reactive treatment is the defining characteristic of welfare-focused BRD management.

What You Can Do

Implement pre-weaning vaccination programs against BRD pathogens in beef calf operations.
Minimize transport distances and duration, and allow adequate rest and rehydration after transport.
Work with a veterinarian to develop appropriate arrival processing and metaphylaxis protocols for your operation.
Train all staff in early BRD recognition — prompt treatment significantly improves welfare outcomes.
Support research into BRD vaccines and management protocols through participation in research programs and producer organization funding.