Jordan H E, Stair E L
Mod Vet Pract. 1984 Oct;65(10):763-6.
In a 2-year study of 49 Oklahoma cattle with a typical history of clinical endoparasitism, 12 animals had Ostertagia only, and Ostertagia was the predominant endoparasite in 21. Only 1 animal had a pure Haemonchus population. Though primary endoparasitism was diagnosed antemortem in 32 animals, postmortem worm counts confirmed the diagnosis in only 19. Worm counts documented inapparent disease in 8 animals. In 21 cases of suspected of toxicosis, 12 animals had endoparasitism none was poisoned.
在一项针对49头有典型临床体内寄生虫病病史的俄克拉荷马牛的为期2年的研究中，12只动物仅感染奥斯特他线虫，21只动物中奥斯特他线虫是主要的体内寄生虫。只有1只动物体内仅有血矛线虫。虽然在32只动物生前诊断出原发性体内寄生虫病，但死后蠕虫计数仅在19只动物中证实了该诊断。蠕虫计数记录了8只动物的隐性疾病。在21例疑似中毒病例中，12只动物有体内寄生虫病，无一中毒。
