Biobest Laboratories Ltd

BVD Order 2019 – Protecting negative herds at all costs

Later this year the Scottish Government will publish The Bovine Viral Diarrhoea (Scotland) Order 2019 introducing the phase 5 control measures.  The primary message is that negative herds must be protected at all costs, with phase 5 heralding a more stringent approach towards herds that are not negative.  There will be a number of changes with the main ones being:

- Increase the pressure on BVD positive herds

  • ScotEID website will be adding a ‘PI locator’ list, documenting the CPH number of herds with PI animals present.  Listing will occur 40 days after the disclosure of a virus positive animal, allowing time for re-testing and/or removal from the herd.
  • All PIs will be required to be housed separately from animals which are negative or have unknown status.  This will be enforced by APHA inspectors who will subject positive herds to unannounced inspections to ensure they are complying with housing rules.  Exception will be made for unweaned calves housed with their dams.
  • With limited exception under licence, positive herds will not be able to bring in cattle.

- Increase the pressure on long-term BVD not negative herds

  • Compulsory BVD investigation (sweeper test) for all herds BVD not negative for 15 months or more. All animals in the herd will need to have an individual BVD virus negative status; subsequently all calves born must continue to be screened for a minimum of 12 months.

- When tissue sampling calves under 20 days old, the official tags must be used

- When re-testing a BVD positive animal, the vet must take the sample

- Reducing lab reporting time to 5 days

  • Results must be uploaded by the approved laboratory to ScotEID within 5 days

- Not negative animals must be tested before they are moved out of a breeding herd

The Bovine Viral Diarrhoea (Scotland) Order 2019 will build on the great work done by farmers and vets in Scotland since the eradication scheme started in 2010.  In this time the number of BVD not negative breeding herds in Scotland has fallen from 40% to 10%.