Cattle moving to a TBIU must have completed a skin test with a negative result within 60 days before being moved, except calves under 42 days old.
Rhaid i wartheg sy'n symud i TBIU fod wedi cwblhau prawf croen gyda chanlyniad negatif o fewn 60 diwrnod cyn cael eu symud, ac eithrio lloi o dan 42 diwrnod oed.