Gough J F
Can Vet J. 1989 Aug;30(8):672-4.
Outbreaks of budgerigar fledgling disease (BFD) occurred in three budgerigar aviaries in Ontario. Acute death in seven to ten-day-old nestlings and feather abnormalities in birds over three weeks of age were common findings. Ascites, hepatomegaly and hydropericardium were prominent gross lesions. Histologically, basophilic intranuclear inclusions were seen in many tissues. A severe drop in hatchability occurred in one aviary-a finding not previously reported with BFD. Interruption of breeding controlled the disease in aviary 1, but failed in two consecutive attempts in aviary 2. A third outbreak occurred in aviary 2 after depopulation and restocking. In aviary 3, the spread of disease was very rapid; 90% of the nestlings died within a few weeks. A papovavirus similar to a previously described isolate was recovered in this outbreak.
安大略省的三个虎皮鹦鹉饲养场爆发了虎皮鹦鹉雏鸟病（BFD）。7至10日龄雏鸟急性死亡以及3周龄以上鸟类羽毛异常是常见症状。腹水、肝肿大和心包积水是明显的大体病变。组织学检查发现，许多组织中可见嗜碱性核内包涵体。一个饲养场的孵化率大幅下降，这是BFD此前未报道过的现象。在饲养场1，繁殖中断控制了疾病，但在饲养场2连续两次尝试均告失败。在饲养场2进行种群清空和重新补栏后，又发生了第三次疫情。在饲养场3，疾病传播非常迅速；90%的雏鸟在几周内死亡。此次疫情中分离出一种与先前描述的毒株相似的乳头瘤病毒。
