부산대학교 도서관

Simple Summary: Vertically transmitted duck viruses are viruses that are transmitted from a female duck to its offspring when it is an egg, which seriously threatens production in the duck breeding industry. In this study, we evaluated the distribution and genetic variation in four vertically transmitted duck pathogens, including DHBV, DuCV, DHAV-3, and ARV. This study found that DHBV was the most prevalent virus, followed by DuCV, and then ARV and DHAV-3. The genetic analysis results showed that all the identified duck viruses here had complex qualities. These findings will improve our knowledge of the evolution of DuCV, DHAV-3, and ARV and help choose suitable strains for vaccination. To investigate the distribution and genetic variation in four vertically transmitted duck pathogens, including duck hepatitis B virus (DHBV), duck circovirus (DuCV), duck hepatitis A virus 3 (DHAV-3), and avian reoviruses (ARV), we conducted an epidemiology study using PCR and RT-PCR assays on a duck population. We found that DHBV was the most prevalent virus (69.74%), followed by DuCV (39.48%), and then ARV (19.92%) and DHAV-3 (8.49%). Among the 271 duck samples, two, three or four viruses were detected in the same samples, indicating that the coinfection of vertical transmission agents is common in ducks. The genetic analysis results showed that all four identified DuCV strains belonged to genotype 1, the DHAV-3 strain was closely clustered with previously identified strains from China, and the ARV stain was clustered under genotype 1. These indicate that different viral strains are circulating among the ducks. Our findings will improve the knowledge of the evolution of DuCV, DHAV-3, and ARV, and help choose suitable strains for vaccination. [ABSTRACT FROM AUTHOR]