The importance of endoparasite counts at necropsy.
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.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology*; D004064:Digestive System / Q000469:parasitology; D006188:Haemonchiasis / Q000469:parasitology / Q000662:veterinary*; D006189:Haemonchus; D009348:Nematoda; D009349:Nematode Infections / Q000469:parasitology / Q000662:veterinary*; D010029:Ostertagiasis / Q000469:parasitology / Q000662:veterinary*; D014251:Trichostrongyloidea; D014252:Trichostrongyloidiasis / Q000662:veterinary*