Scrupulous hygiene and biosecurity are essential to protect flocks from the threat of disease, and it is important bird keepers continue to complete the biosecurity self-assessment checklist.
Rhaid wrth fesurau hylendid a bioddiogelwch llym i ddiogelu heidiau rhag y clefyd, ac mae'n bwysig bod ceidwaid adar yn dal ati i hunanasesu'u mesurau bioddiogelwch.