Farm Animal Welfare

Farm Cattle: Housing and Respiratory Disease Prevention

Building design and ventilation management in cattle housing are primary determinants of respiratory disease risk and welfare outcomes for housed animals.

Key Facts

Bovine respiratory disease (BRD) is the leading cause of mortality in housed beef cattle
Inadequate air exchange rates allow pathogen build-up and increase infection pressure
Optimal housing provides 50-100 air changes per hour through natural ventilation
Humidity above 85% combined with cold temperatures creates the highest respiratory disease risk
Separation of age groups reduces pathogen spread from older immunologically experienced animals to naive calves

Welfare Considerations

Respiratory disease causes severe suffering through fever, breathing difficulty, and systemic illness. The majority of risk factors are environmental and preventable through good housing design and management. Investing in appropriate buildings with natural ventilation, adequate space, and age separation reduces disease incidence, directly reducing the welfare harm experienced by housed cattle.

What You Can Do

Assess ventilation in your cattle buildings against recommended air change rates
Ensure adequate space per animal as overstocking increases humidity and pathogen load
Separate age groups to reduce transmission from older to younger cattle
Monitor disease incidence in different housing types to identify highest-risk facilities
Work with a building specialist to improve ventilation in high-risk housing