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Ovine Johne's Disease

Ovine Johne's (pronounced 'yoh-nees') disease is an infectious fatal wasting disease of sheep. It is often abbreviated to OJD. OJD can have severe economic effects in sheep flocks if it is left uncontrolled. It is caused by a strain of the bacterium Mycobacterium paratuberculosis.

Photo: A sheep showing signs of OJD.
Photo: Ovine Johne's disease affected sheep

This page has been created to provide ready access to key information on Ovine Johne's disease.


What is the ABC scheme?
Sheep Health Statement
How to obtain Gudair Vaccine
A list of SheepMAP approved veterinarians
Information Notes
External Websites
Sheep Notes
OJD News

What is the ABC scheme?

What is the ABC Trading scheme?
The Assurance Based Credits (ABC) Trading Scheme forms the basis of the new national ovine Johne’s disease (OJD) program. Every flock in Australia now has an ABC score. This score can be used by producers wishing to sell or purchase sheep to indicate the risk of a flock being infected with OJD.

How do I know my score?
ABC scores range from 0-10. Points towards the ABC Score can be obtained from location of the flock, testing for OJD, Vaccination against OJD and low risk certification. The higher the score the lower the risk the sheep have OJD. Refer to AG1156 - Assurance Based Credits (ABC) Scheme and the Sheep Health Statement (PDF 309KB)

What is an Sheep Health Statement (SHS)?
An SHS is a formal document that should accompany non-slaughter sheep when they are sold. It does not replace a national vendor declaration (NVD) but should be used in conjunction with a NVD. The SHS shows the ABC score of the sheep being sold and is signed by the vendor. It may also contain information about the footrot, lice and ovine brucellosis history of the flock. It is an offence to make a false declaration on this statement.

Is it mandatory to complete an SHS?
It is not mandatory to complete an SHS unless your flock is infected with OJD, suspected to be infected with OJD, or if the mob consigned has an ABC score of one or less. However, if you sell or purchase any sheep without an SHS, or purchase sheep with an ABC score lower than your current flock ABC score, you may not be eligible for financial assistance if OJD is found or suspected to be in your flock.

Where can I obtain more information?
You can obtain further information from your veterinarian, animal health staff at your local Department of Primary Industries office or from the OJD Agriculture Notes below. To download a copy of the SHS, please see below.

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You will need Adobe Acrobat Reader to view the below documents. A free copy can be downloaded from Adobe Acrobat (external link).

Sheep Health Statement (PDF 199KB)

How to obtain Gudair Vaccine

Any sheep producer may purchase Gudair vaccine from approved retailers. This is a list of authorised Gudair vaccine (PDF 77kb) retailers within Victoria (as of August 2009).

Flock owners eligible for the vaccine subsidy may claim the subsidy through DPI as a grant payment (rebate) by completing the application form. Application for Gudair vaccine subsidy grant payment (PDF 26kb).


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Information Notes

External Websites
Sheep Notes
OJD News

You will need Adobe Acrobat Reader to view the below documents. A free copy can be downloaded from Adobe Acrobat (external link).



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