Having careful and thorough hygiene and biosecurity measures in place on a daily basis offers the best protection for kept birds against this highly infectious disease.
Mae cael mesurau hylendid a bioddiogelwch gofalus a thrylwyr ar waith bob dydd yn cynnig yr amddiffyniad gorau ar gyfer adar a gedwir yn erbyn y clefyd heintus iawn hwn.