Once closed the cattle usually need two clear Approved Segregated Group (ASG) tests at least 60 and 120 days after closure of the IU, before the cattle in the IU can be released from TB restrictions.
Unwaith y bydd wedi’i chau bydd angen i’r gwartheg fod wedi cael dau brawf ASG (Grŵp Ar Wahân Cymeradwy) clir o leiaf 60 a 120 diwrnod ar ôl cau’r Uned cyn y cewch godi’r cyfyngiadau TB arnynt.