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|標題:||Studies on the Risk Factors and Control Strategies of Porcine Respiratory Disease Complex
Porcine respiratory disease complex (PRDC), which is caused by multiple factors including multiple pathogens, has became a major economic problem in growing and fattening pigs for swine producers. Primary pathogens, such as classical swine fever virus (CSFV), pseudorabies virus (PRV), porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus 2 (PCV2), swine influenza virus (SIV), and Mycoplasma hyopneumonia, and secondary bacterial pathogens, as well as the environmental stress contribute to the complex of respiratory diseases. According to the previous results, the ages of pigs died by PRDC were major from 8 to 16-week-old. PCV2 and Salmonella choleraesuis were relative to the death during this period of age. Moreover, pigs at 12-week-old had high ratio of seroconversion of PRRSV and PCV2, as well as of PRV, SIV, PPV, and Mycoplasma hyopneumonia. Thus, this project was programmed to investigate the relative risk factors and control strategies of PRDC by environmental monitoring and pathological and serological surveillance. Through these studies, an effective control strategy will be addressed on PRDC control.
|Appears in Collections:||獸醫病理生物學所|
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