Transthoracal ultrasound examination of pre-weaned dairy calves to detect early signs of bovine respiratory disease (BRD) Healthy asymptomatic lung (endorectal probe, 7,5 MHz) Bovine lung affected by pneumonia (endorectal probe, 7,5 MHz) Contact person Transthoracal ultrasound examination of pre-weaned dairy calves to detect early signs of bovine respiratory disease (BRD) Department Department of Obstetrics and Food Animal Medicine Clinic (DOFAMC)