The Use of Lung Biopsy to Determine Early Lung Pathology and Its Association with Health and Production Outcomes in High-Risk Feedlot Steers

The purposes of this study were to determine if lung biopsy can be used to characterize pulmonary pathology at feedlot arrival and in sick calves within the first 30 days on feed; to determine if lung pathology is associated with health and production outcomes; and to determine the microbiological agents associated with early lung pathology using lung biopsy.