An investigation of duck circovirus and co-infection in Cherry Valley ducks in Shandong Province, China.
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.
Zhang
Xingxiao
X
College of Animal Science and Veterinary Medicine, Research Center for Animal Disease Control Engineering, Shandong Province, Shandong Agricultural University, Tai'an, Shandong 271018, China.
Jiang
Shijin
S
Wu
Jiaqiang
J
Zhao
Qin
Q
Sun
Yani
Y
Kong
Yibo
Y
Li
Xiaoxia
X
Yao
Meiling
M
Chai
Tongjie
T