Morris M P, Davison S A, Eckroade R J
Avian Dis. 1986 Oct-Dec;30(4):843-6.
Laryngotracheitis was diagnosed in a flock of molted, caged table-egg-layers. Morbidity was restricted to an area of the house in which the birds had been exposed to smoke from a fire in the house and to a powdered chemical fire-extinguisher used on the fire. Mortality in this group began to rise 6 days after the fire and continued to be above normal for about 3 weeks. Feed consumption dropped for about 1 1/2 weeks after the fire but was normal or above normal during the rest of the disease outbreak. Egg production dropped slightly for 1 week after the fire, then returned to normal. Microscopic tracheitis in the exposed birds continued for 11 weeks after the fire. Hens outside of the smoke-affected area did not show histopathological changes or shed laryngotracheitis virus.
在一群换羽的笼养食用蛋鸡中诊断出喉气管炎。发病局限于鸡舍内鸟类接触到房屋火灾烟雾以及用于灭火的粉末状化学灭火器的区域。该组死亡率在火灾后6天开始上升，并在约3周内持续高于正常水平。火灾后饲料消耗量下降了约1.5周，但在疾病爆发的其余时间正常或高于正常水平。火灾后产蛋量略有下降1周，然后恢复正常。受影响鸟类的微观气管炎症在火灾后持续了11周。烟雾影响区域外的母鸡未出现组织病理学变化，也未排出喉气管炎病毒。
