2021 Bull Sale Purchasers.
As per Johnes Disease in Cattle FAQ Fact Sheet published by Animal Health Australia
Can I introduce cattle from a lower J-BAS herd?
Producers may choose to introduce small numbers of animals with a lower score; however this may affect your J-BAS. It's important you are confident that the source herd is low risk and well managed under good biosecurity practices. Introduced animals should be noted in the biosecurity plan and handled through actions like monitoring them for signs of illness, keeping them separate from vulnerable young cattle on the property and/or testing them (especially if a J-BAS 7 and 8 herd where testing is required).
Introductions for J-BAS 7 and 8 herds should be discussed with the veterinary advisor before purchasing the animals.
Herds selling cattle to WA will need to check with the WA Department for entry requirements.
For further information pertaining to this subject the attached FAQ Sheet is recommended reading.