Experimental Reproduction Of Porcine Respiratory Disease Complex In Pigs Inoculated Porcine Reproductive And Respiratory Syndrome Virus And Mycoplasma Hyopneumoniae And Followed By Inoculation With Porcine Circovirus Type 2
JOURNAL OF VETERINARY MEDICAL SCIENCE(2021)
摘要
The aim of this study was to reproduce severe pneumonic lesions, similar to those during naturally-occurring porcine respiratory disease complex, in pigs dually inoculated with porcine reproductive and respiratory syndrome virus and Mycoplasma hyopneumoniae at 6 weeks of age, followed by inoculation with porcine circovirus type 2 at two weeks after. Time and sequence of infection with three pathogens mirror Asian field conditions. Microscopically, interstitial pneumonia and peribronchiolar lymphoid hyperplasia are considered the most characteristic lung lesions in infected pigs. The results of the present study demonstrate that inoculation of pigs with these three pathogens can lead to severe interstitial pneumonia with peribronchial or peribronchiolar lymphoid hyperplasia and fibrosis.
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关键词
Mycoplasma hyopneumoniae, porcine circovirus type 2, porcine reproductive and respiratory syndrome
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