Calf Pneumonia Prevention and Welfare

Calf pneumonia is the leading cause of mortality in young cattle after the neonatal period. Prevention through housing, ventilation, colostrum management, and vaccination dramatically reduces suffering.

Key Facts

Bovine respiratory disease complex affects up to 25% of UK dairy calves in their first six months of life
Multiple pathogens including Mannheimia haemolytica, Pasteurella multocida, and BRSV contribute to disease
Poor ventilation, overcrowding, and inadequate colostrum intake are the primary risk factors for calf pneumonia
Calves with subclinical pneumonia grow more slowly and have poorer long-term performance without showing obvious illness
Vaccination against key respiratory pathogens significantly reduces disease incidence and severity
Acoustic stethoscope and calf scoring systems allow early detection before clinical signs are obvious

Welfare Considerations

Pneumonia causes fever, laboured breathing, and systemic illness that is genuinely distressing for affected calves. Subclinical pneumonia — affecting many more calves than clinical disease — causes lung damage without obvious signs, allowing prolonged suffering to go undetected and untreated. The high prevalence of this preventable disease in UK calf populations represents a significant failure of husbandry standards that better management could substantially reduce.

What You Can Do

Ensure calves receive adequate colostrum (minimum 3 litres of high-quality colostrum) within 6 hours of birth
Provide calf housing with adequate ventilation — draft-free but not stagnant air is the target
Implement respiratory scoring using Wisconsin or other validated systems to detect subclinical disease early
Vaccinate calves against key respiratory pathogens as part of a planned veterinary health programme
Monitor ambient temperature and humidity in calf accommodation — both extremes increase pneumonia risk
Isolate clinically affected calves immediately and treat under veterinary guidance