Hyostrongylus rubidus in sows at pasture.
D000818:Animals; D005243:Feces / Q000469:parasitology; D005260:Female; D007814:Larva; D010270:Parasite Egg Count; D006109:Poaceae / Q000469:parasitology; D013552:Swine; D013553:Swine Diseases / Q000469:parasitology; D014251:Trichostrongyloidea; D014252:Trichostrongyloidiasis / Q000469:parasitology / Q000662:veterinary*