Studies on hemorrhagic pneumonia in Moschus sifanicus

摘要

A series of investigations were carried out including epidemiology, etiology?and pathology?on?hemorrhagic pneumonia?in?Moschus?sifanicus,?which had prevailed in Xinglong Mountain National Nature Reserve District in Gansu province of China. The results indicated that the prevalence of this disease could be correlated with local humidity in Xinglong Mountain in Gansu province of China. The disease is caused by single infection of?Pasteurella?multocida?or mix of?P. multocida,?Escherichia coliand?Pseudomonas?aeruginosa, and is a contagious disease. The pathological changes were mainly manifested in?the vessel wall of bronchia and bronchiole appeared congested, bleeding, edemic with infiltration of inflammatory cells, mucosa of bronchiole degenerates, with the presence of necrosis and exfoliation,pulmonary?alveolus?generated?suppuration,?disaggregation?and?necrosis. It was concluded that the diseases are mainly caused?by local bacteria and?affected?M. sifanicus?finally die of hemorrhagic or purulent, necrotic pneumonia.