Gazdzinski Peter, Barnes John
ACuddy Farms Inc., Tech Services, 28429 Centre Road, Strathroy, ON N7G 3H6, Canada.
Avian Dis. 2004 Sep;48(3):681-5. doi: 10.1637/7163-020204R.
Two flocks of turkey breeders experienced an increased mortality and high culling rate in the first weeks of egg production. The majority of dead and culled hens had cheesy core in the cloaca and vagina. Postmortem examination revealed fibrinous pseudomembranes in the vagina and cloaca. The thickness of these membranes posed an obstruction to egg passage leading to internal laying and egg peritonitis. Swabs from cloaca and vagina produced numerous colonies of only E. coli. Investigations of this unusual vaginitis showed that these two flocks had a higher number of immature hens with present hymens, and insemination crews mistakenly inseminated all hens in which they were able to evert the cloaca. Breaking the hymen with an insemination pipette created a wound and developed extensive infection with E. coli bacteria.
两群火鸡饲养者在产蛋的头几周经历了死亡率上升和淘汰率高的情况。大多数死亡和被淘汰的母鸡泄殖腔和阴道有干酪样核心。尸检显示阴道和泄殖腔有纤维蛋白性假膜。这些膜的厚度阻碍了卵子通过，导致卵子在体内留存和卵性腹膜炎。从泄殖腔和阴道采集的拭子仅培养出大量大肠杆菌菌落。对这种不寻常的阴道炎的调查表明，这两群鸡中有较多未成熟且处女膜仍存在的母鸡，输精人员错误地对所有能够外翻泄殖腔的母鸡进行了输精。用输精滴管弄破处女膜造成了伤口，并引发了大肠杆菌的广泛感染。
