Boon J H
Tijdschr Diergeneeskd. 1980 Dec 15;105(24):1077-83.
Respiratory disease occupies a prominent position in the series of common diseases in calves. Efforts were made to take an inventory of possible causes of cough in calves at pasture. For this purpose, a number of calves on twenty-three, ten and eight mixed farms respectively were clinically studied during the period from 1975 up to and including 1977. Faecal, sputum and serum samples were collected to examine them for the presence of husk worm larvae, husk worm eggs, antibodies to specific viruses and lung worms. In 1978, titres of antibodies to lung worms were determined in the serum samples of a large number of calves from forty-five farms. From the findings obtained, conclusions were drawn regarding the prevention of virus and lung worm infections in calves at pasture and regarding the diagnosis and prevention of verminous bronchitis in these animals.
呼吸系统疾病在犊牛常见疾病中占据显著地位。已努力清查牧场中犊牛咳嗽的可能病因。为此，在1975年至1977年期间（包括1977年），分别对23个、10个和8个混合农场的若干犊牛进行了临床研究。采集了粪便、痰液和血清样本，以检测其中是否存在谷蛾幼虫、谷蛾虫卵、特定病毒抗体和肺线虫。1978年，测定了来自45个农场的大量犊牛血清样本中肺线虫抗体的滴度。根据所获研究结果，得出了关于预防牧场犊牛病毒和肺线虫感染以及这些动物蠕虫性支气管炎诊断与预防的结论。
