Download eBook Bovine Respiratory Disease. Bovine respiratory disease (BRD) continues to be the most costly disease problem facing the cattle industry. In cattle, respiratory disease occurs as a complex Nineteen chapters scientists from the Americas and Europe present research findings on respiratory ailments in cattle. Early detection of bovine respiratory disease (BRD) in feedlot cattle: why and how? Dr. E. Timsit DVM, PhD, Dip. ECBHM. Dr. S. Assi