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Publication Analysis of Porcine Common Pathogens in Pig Herd in Taiwan  

Update Date: [2013-11-14]

NO.: 42
 
Reportno. AHRI report No.42
Topic

Analysis of Porcine Common Pathogens in Pig Herd in Taiwan

Department

Animal Health Research Institute, Council of Agriculture, Executive Yuan

Author

Chi-Jian Chang*, Chu-Hsiang Pan, Shu-Hwae Lee, Tien-Shine Huang, Chun Wang, Ming-Hwa Jong

Summary
Retarded growth is a common problem in pig industry in Taiwan . To investigate the infectious agents which might be related to this problem, we visited 10 pig herds throughout Taiwan focusing on nursing and fattening pig farms. A total of 70 pigs were necropsied, their gross lesions were recorded and nasal swabs and fresh lung tissues were collected. Primers specific to 6 viral and 6 bacterial pathogens of pigs which were frequently identified in Taiwan were designed. Results of PCR or RT-PCR revealed that the major viral pathogen was PCV2 ( 54.2% ) , followed by PRRSV ( 41.4% ) , SIV ( 8.6% ) and porcine coronavirus (7.1% ) ; the primary bacterial pathogen was Streptococcus suis ( 80% ) , and again followed by Mycoplasma hyopneumoniae ( 51.4% ) , Bordetella bronchisepticum, ( 32.9% ) , Actinobacillus plerupneumoniae ( 21.4% ) , Pasteurella multocida ( 15.7% ) and Salmonella spp ( 15.7% ) . However, pathogens identified from the nasal swabs and lung tissues varied. Therefore, we suggested that both of nasal swabs and lung tissues were used for potential isolation of the porcine respiratory disease pathogens from retarded growth pigs. 

Keyword Pig herd, Respiratory disease