An investigation of duck circovirus and co-infection in Cherry Valley ducks in Shandong Province, China |
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Authors: | Zhang Xingxiao Jiang Shijin Wu Jiaqiang Zhao Qin Sun Yani Kong Yibo Li Xiaoxia Yao Meiling Chai Tongjie |
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Institution: | College of Animal Science and Veterinary Medicine, Research Center for Animal Disease Control Engineering, Shandong Province, Shandong Agricultural University, Tai'an, Shandong 271018, China. |
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Abstract: | The co-infection of duck circovirus (DuCV) with Riemerella anatipestifer (RA) or/and Escherichia coli (E. coli) or/and duck hepatitis virus I (DHV-I) in Cherry Valley ducks in China's Shandong Province was investigated by using polymerase-chain-reaction (PCR)-based methods. For this study, 742 ducks sampled at random from 70 duck farms during 2006-2007 were examined using PCR and dot-blot hybridisation (DBH) tests. Overall the DuCV infection rate was 33.29%. Compared with those at 2 weeks of age, the ducks at 3-4 weeks of age were more susceptible to DuCV infection. Compared with the DuCV-negative ones, the DuCV-positive ducks had a higher rate of infection by DHV-I (25.5% vs. 7.475%), RA (23.48% vs. 8.28%) and E. coli (16.19% vs. 4.85%). This investigation shows that DuCV infection is common in Cherry Valley ducks on some farms in Shandong Province. |
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Keywords: | Cherry Valley duck DuCV Co-infection |
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