A newly emerged duck parvovirus. which causes beak aUophy and dwarfism syndrome (BADS) in Cherry Valleyducks, has appeared in Northem China since March 2015. To explore the genetic diversity among waterfowl parvovirus isolates, thecomplete genome of an identified isolate designated SDLC01 was sequenced and analyzed in the present study. Genomic sequence analysis showed that SDLCOI shared 90.8%-94.6% of nucleotide identity with goose parvovirus (GPV) isolates and 78.6% -81.6% ofnucleotide identity with classical Muscovy duck parvovirus (MDPV) isolates. Phylogenetic analysis of 443 nucleotides (nt) of the frag-ment A showed that SDLCOI was highly similar to a mule duck isolate (strain D146/02) and close to European CPV isolates but sepa-rate from Asian GPV isolates. Analysis of the left inverted terminal repeat regions revealed that SDLCOI had two major segments deletedbetween positions 160-176 and 306-322 nt compared with field GPV and MDPV isolates. Phylogenetic analysis of Rep and VPI enco-ded by two major open reading frames of parvoviruses revealed that SDLC01 was distinct from all GPV and MDPV isolates. The viralpathogenicity and genome characterization of SDLC01 suggest that the novel GPV (N-GPV) is the causative af;ent of BADS and belongsto a distinct CPV-related subgroup. Funhermore, DPV sequences were detected in diseased ducks by polymerase chain reaction and viral proliferation was demonstrated in duck embryos and duck embryo fibroblast cells.
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