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Molecular survey of duck circovirus infection in poultry in southern and southwestern China during 2018 and 2019.
Liu, Hao; Li, Li Xia; Sun, Wen Chao; Shi, Ning; Sun, Xiu Tao; Jin, Ning Yi; Si, Xing Kui.
Afiliación
  • Liu H; School of Life Sciences and Engineering, Foshan University, Foshan, 528000, China.
  • Li LX; School of Life Sciences and Engineering, Foshan University, Foshan, 528000, China.
  • Sun WC; Jilin Wildlife Rescue and Rehabilitation Center, Forestry Department of Jilin Province, Changchun, 130122, China.
  • Shi N; Institute of Virology, Wenzhou University, Wenzhou, 325035, China.
  • Sun XT; School of Life Sciences and Engineering, Foshan University, Foshan, 528000, China.
  • Jin NY; Honghe Animal Disease Prevention and Control Center, Mengzi, 661000, China.
  • Si XK; Military Veterinary Institute, Academy of Military Medical Sciences, Changchun, 130122, China.
BMC Vet Res ; 16(1): 80, 2020 Mar 05.
Article en En | MEDLINE | ID: mdl-32138728
BACKGROUND: Duck circovirus (DuCV) is a potential immunosuppressive virus that causes feather disorders in young ducks. In this study, DuCV obtained from various species of ducks was investigated by polymerase chain reaction (PCR) in southern and southwestern China (Guangdong, Guangxi and Yunnan provinces) from 2018 to 2019. RESULTS: A total of 848 bursa samples were collected from dead Mulard, Cherry Valley Pekin, Muscovy and Mallard ducks from duck farms. The positivity rate of DuCV in the total sample was approximately 36.91%. We found that the prevalence of DuCV in Yunnan (43.09%) was higher than those in Guangxi (34.38%) and Guangdong (34.4%). However, the positivity rates of DuCV in the four duck species were not significantly different (P > 0.05). Nineteen randomly selected complete viral genomes were sequenced. The complete genomes of the DuCV were 1987 to 1995 nt in length, and were 81.7-99.3% homologous to the other 57 sequences in GenBank. Phylogenetic analyses based on the complete genomes of 76 DuCVs showed that the 19 novel DuCV sequences from Guangdong and Guangxi provinces mainly belonged to the DuCV-1 and DuCV-2 genetic groups, respectively. However, the two genotype groups coexisted in Yunnan Province. In addition, recombination analysis showed putative recombination sites in 3 strains in Yunnan that originated from strains Guangdong and Guangxi. Interestingly, the epidemiological investigation showed that Mulard ducks, Cherry Valley Pekin ducks and Muscovy ducks more than 4 weeks old were more susceptible to infection with the novel DuCV than ducks less than 4 weeks old. CONCLUSIONS: These data provide insight into the molecular epidemiology and genetic diversity of DuCVs circulating in southern and southwestern China for the first time.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de las Aves de Corral / Genoma Viral / Circovirus / Infecciones por Circoviridae Tipo de estudio: Risk_factors_studies Límite: Animals País/Región como asunto: Asia Idioma: En Revista: BMC Vet Res Asunto de la revista: MEDICINA VETERINARIA Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de las Aves de Corral / Genoma Viral / Circovirus / Infecciones por Circoviridae Tipo de estudio: Risk_factors_studies Límite: Animals País/Región como asunto: Asia Idioma: En Revista: BMC Vet Res Asunto de la revista: MEDICINA VETERINARIA Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido