As a result of an increased risk to poultry during Avian Influenza outbreaks in recent years, decisions were made by the UK administrations to introduce temporary mandatory housing measures.
O ganlyniad i risg uwch i ddofednod yn ystod achosion o ffliw adar yn ystod y blynyddoedd diwethaf, gwnaed penderfyniadau gan weinyddiaethau'r DU i gyflwyno mesurau letya gorfodol dros dro.