Characterisation of New Zealand isolates of infectious bursal disease virus

Chai, Y. F., Meers, J., Wilks, C. R. and Christensen, N. H. (2001) Characterisation of New Zealand isolates of infectious bursal disease virus. Archives of Virology, 146 8: 1571-1580. doi:10.1007/s007050170079

Author Chai, Y. F.
Meers, J.
Wilks, C. R.
Christensen, N. H.
Title Characterisation of New Zealand isolates of infectious bursal disease virus
Journal name Archives of Virology   Check publisher's open access policy
ISSN 0304-8608
Publication date 2001-08
Sub-type Article (original research)
DOI 10.1007/s007050170079
Volume 146
Issue 8
Start page 1571
End page 1580
Total pages 10
Place of publication Wien, Austria
Publisher Springer
Collection year 2001
Language eng
Subject CX
300510 Virology
630106 Poultry
0707 Veterinary Sciences
Abstract Isolates of infectious bursal disease virus (IBDV) were obtained from domestic poultry in New Zealand in 1997 and 1998. An in-vivo pathogenicity study carried out in specific pathogen free (SPF) chickens demonstrated the low virulence of one of the virus isolates. The nucleotide sequences of the hypervariable region of the VP2 gene of two isolates were determined and compared with published sequences of strains from other countries. The deduced amino acid sequence of the two New Zealand IBDV isolates showed 100% identity with each other, suggesting that little genetic drift had occurred. Phylogenetic analysis showed that the New Zealand isolates were more closely related to two attenuated IBDV strains (Cu1 and PBG98) than to classical (STC and 52/70), very virulent (DV86), variant (variant E) or Australian (002-73) strains. The results support the hypothesis that an attenuated strain of the virus was inadvertently introduced into the NZ poultry population in 1993.
Keyword New Zealand isolates
infectious bursal virus
poultry industry
Strain Difference
Sequence Homology
Q-Index Code CX

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Veterinary Science Publications
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Created: Tue, 14 Aug 2007, 16:38:48 EST