Andersen S, Fogh J
Nord Vet Med. 1981 Sep-Nov;33(9-11):484-91.
During a 5 months' period from January to May 1981 faecal samples of 176 donkeys from 59 herds all over the country were examined at the Institute of internal medicine, The Royal Veterinary and Agricultural University, Copenhagen. In addition, the investigation also included 106 horses from 30 of the donkey herds and 34 horses hospitalized with symptoms of dyspnoea and chronic coughing. In all, 87.5% of the donkeys were shown to excrete D. arnfieldi larvae, often in very high numbers, and the larval excretion was the only symptom of lungworm infection. There was no significant correlation between larval excretion and age, sex or herd size. In horses, the frequency of D. arnfieldi infection was approximately the same in the horses from donkey herds and in horses hospitalized due to chronic cough (10.4% and 8.8% resp.). In contrast to the donkeys, the infection in horses was always accompanied by dyspnoea and coughing.
1981年1月至5月的5个月期间，哥本哈根皇家兽医与农业大学内科研究所对来自全国59个畜群的176头驴的粪便样本进行了检查。此外，调查还包括来自30个驴群的106匹马以及34匹因呼吸困难和慢性咳嗽症状住院的马。结果显示，87.5%的驴排出阿氏圆线虫幼虫，且数量往往非常多，幼虫排泄是肺线虫感染的唯一症状。幼虫排泄与年龄、性别或畜群规模之间无显著相关性。在马中，来自驴群的马和因慢性咳嗽住院的马感染阿氏圆线虫的频率大致相同（分别为10.4%和8.8%）。与驴不同的是，马的感染总是伴有呼吸困难和咳嗽。
