Calf pneumonia is the most common disease of preweaning calves and a major cause of welfare harm and economic loss. Early detection and prompt treatment dramatically improve outcomes.
Calf pneumonia causes genuine suffering — respiratory distress, fever, and the profound malaise of systemic illness. Untreated, it progresses rapidly to pleuropneumonia or chronic lung damage that permanently impairs respiratory function. Detection is the primary welfare challenge — early-stage pneumonia is subtle and easily missed without objective assessment tools. Training farm staff to use calf scoring systems and act at defined thresholds rather than waiting for obvious illness is the most impactful welfare intervention available. Pain relief alongside antimicrobial treatment significantly reduces suffering duration. Management factors — ventilation, colostrum quality, stocking density — address the underlying causes rather than treating consequences.