Pigs intended for export must have an eartag or tattoo and it must display the ‘GB’ or ‘UK-GB’ prefix, herdmark and unique identification number
Rhaid i foch y bwriedir eu hallforio fod â thag clust neu datŵ a rhaid iddo arddangos y llythrennau 'GB' neu 'UK-GB', rhif y genfaint a'r rhif adnabod unigryw.