Once this derogation period has ended the code stamped onto individual eggs needs change from 1UK (free-range) to 2UK (barn) and the egg packaging must be changed from free-range to barn eggs.
Unwaith y bydd y cyfnod rhanddirymiad hwn wedi dod i ben mae'r cod sydd wedi'i stampio ar wyau unigol yn newid o 1UK (maes) i 2UK (sgubor) a rhaid newid y deunydd pacio o wyau maes i wyau sgubor.