You must tell the British Cattle Movement Service (BCMS) about movements within 3 days and update your herd register within 36 hours.
Rhaid dweud wrth Wasanaeth Symud Gwartheg Prydain (BCMS) am symudiadau o fewn tri diwrnod calendr a diweddaru cofrestr eich buches o fewn 36 awr.