Respiratory diseases of beef cattle under intensified systems.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D004165:Diphtheria / Q000662:veterinary*; D007241:Infectious Bovine Rhinotracheitis; D010326:Pasteurella Infections / Q000662:veterinary*; D011024:Pneumonia, Viral / Q000662:veterinary*