特别是法氏囊病、苍白综合征（pale bird）、吸收障碍综合征（malabsorption）以及呼肠孤病毒引起的传染性发育障碍综合征（infectious stunting）。
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The Pale bird syndrome 鸡苍白综合症
Depending on the species, bird eggs can be any color ranging from chicken's plain white to a robin's blue, streaked, spotted, bright, pale, and anything in between.
不同鸟类蛋壳的颜色千差万别，鸡蛋是纯白色，知更鸟蛋是蓝色，其它蛋壳的颜色迥异：有条纹的、有斑点的、亮色的、淡色的或者是介于之间的。
Her hand fluttered from its chair-arm and lit on his with a clutch of little pale nails like bird-claws.
她的一只手从椅子扶手上滑落下来，一把像鸟爪般苍白的小指甲落在他手上。
The jewels, set alongside bird cages, empty but for a fluffy white feather, were mainly in white diamonds with inserts of stones in soft shades like pale rose-colored, pear-shaped sapphires.
空空的只剩一片轻柔的白色羽毛的鸟笼旁边，是镶嵌着淡玫瑰色宝石，缀着梨型蓝宝的白钻美饰。
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