Respiratory diseases of beef cattle under intensified systems

Abstract

Extract

Under intensified management systems, the more common diseases of beef cattle include pasteurellosis or shipping fever, infectious bovine rhinotracheitis (IBR), enzootic or virus pneumonia, and bovine diphtheria. Other respiratory diseases that might be prevalent in the beef management systems of New Zealand include lungworm, atypical interstitial pneumonia, and allergic rhinitis. These will be discussed only in terms of differential diagnosis. No further mention will be made of the exotic diseases contagious bovine pleuropneumonia and haemorrhagic septicaemia or to the respiratory form of bovine tuberculosis which is uncommon in both Canada and New Zealand.