162 



SWINE PRACTICE 



dition persists abscess formation may occur. Bronchitis is usually 

 associated with bronchopneumonia and in such cases the lesions 

 characterizing bronchitis would also be present. 



Symptoms. — Catarrhal pneumonia in swine is extremely difficult 

 to diiiferentiate from bronchitis because of the inability to efficiently 

 auscultate or percuss the thorax. Catarrhal pneumonia offers the 

 same general symptoms that have been noted in bronchitis, except 

 that pneumonic symptoms are usually more intensive than those of 

 bronchitis. Catarrhal pneumonia has no definite course, the length 

 or duration of the disease depending upon the cause, extent of the 



Fig. 31. CATARBHAL PNEUMONIA. A, mucous coUection in alveolus; B, 

 alveolar wall; C, desquamated epithelial cells; D, fibrous tissue forma- 

 tion. 



disease, and the resistance of the affected animal. The disease is most 

 fatal in young swine. 



Treatment. — ^Medicinal treatment other than inhalation of medi- 

 cated vapors is of little or no value. Proper sanitary conditions 

 should be provided, and the affected animals should be given easily 

 digested, wholesome food in sufficient quantities to build u.p the body 

 and maintain strength. If the causative factor is an infection, isola- 

 tion and proper quarantine regulations should be enforced. 



Croupous Pneumonia 



Croupous pneumonia is a disease involving lobes or large lung 

 areas and is characterized by the presence of a hemorrhagic exudate 

 in the air cells. It is not a common primary condition in swine, but 

 is frequently associated with hog cholera. 



