Johne'S Beef Assurance Score


Johne’s Beef Assurance Score
The Johne’s Beef Assurance Score (J-BAS) is a risk-profiling tool developed for use in the new
approach to Johne’s disease (JD) in beef cattle. It is to be used as a guide and, when introducing
cattle, producers should ask further questions about JD in the herd and other species on the
property from which the cattle are sourced, rather than rely on the score alone.
Johne’s Beef Assurance Score (J-BAS) [numbers equate to Dairy Score]
Two successive negative Sample tests 2 years apart,
and ongoing triennial Check Test
High assurance
One negative Sample test a minimum of 5 years
after the last confirmed clinical case (or if no history
of disease) and ongoing triennial Check Test
No history of JD on property or minimum 5 years since last
Managed disease
clinical case confirmed on property
If previously infected, minimum of 2 years of biosecurity plan
implemented and since last clinical case of JD confirmed on property,
plus all high-risk animals identified and removed
If no previous infection, biosecurity plan in place for 2 years
Biosecurity plan in place
Clinical case(s) removed
First steps
Suspect, infected and unknown
Unmanaged risk
*All plans must be documented. The National Farm Biosecurity Reference Manual - Grazing Livestock
Production provides a guide to use for the property biosecurity plan. All plans should include the JD
in Cattle Biosecurity Checklist.
Having other JD-susceptible species (sheep, goats, alpacas) on the property does not affect the score
for the cattle herd, but cases of JD in these species must be considered when deciding the score for
the cattle herd.
A clinical case is an infected animal with weight loss +/- chronic diarrhoea, that does not respond to
Johne’s Beef Assurance Score – 17 August 2017


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