Research Project Details

Project Details

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UNE-88 Test to differentiate Rispens CVI988 vaccine from wild type MDV
Summary Development and validation of a fully quantitative differential assay that will distinguish between Rispens CVI988 vaccine and Australian wildtype MDV1 in pure and mixed infections in DNA samples extracted from spleen, feather tips, blood/PBL and poultry dust samples.
Program Chicken Meat
Research organisation Australian Egg Corporation Ltd
Objective summary The project has a rather straightforward objective. This is to develop, validate and make available to industry a fully quantitative differential PCR assay that will distinguish between the main serotype 1 Marek’s disease virus (MDV) vaccine used in Australia (Rispens CVI988) and Australian wildtype MDV1.

The reason for this is that the Australian layer and meat breeder industries currently cannot distinguish easily between infection with pathogenic MDV1 and infection with vaccinal MDV1.

The general hypothesis under test is that there is sufficient systematic sequence variation between the Rispens CVI988 vaccine virus, and wildtype Australian MDVs to enable the development of a reliable test to differentiate them. We have significant data to hand currently in support of this hypothesis.

Our research plan is to improve and further validate our current Rispensspecific qPCR, develop a reverse assay which amplifies only wildtype MDV1 and not Rispens, test and validate these under industry conditions and ensure that the tests become available to industry. In the event that the present taqman qPCR tests cannot be sufficiently optimised, tests will be developed using a new technology, High Resolution Melt Curve Analysis.
Project Stage Closed
Project start date Thursday, January 24, 2008
Project completion date Wednesday, September 01, 2010
Journal articles from project Not Available
National priority Safeguarding Australia
Rural priority Soil, water and managing natural resources
RIRDC goal CME-Manage the environment for sustainable development
Principal researcher Stephen Walkden-Brown
Research manager Kylie Hewson
Admin contact Libby Magann