Ascaris suum
Ascaris suum is a large ascarid nematode found in the small intestine of pigs.
Gastro-intestinal nematodes — pigs
Pigs in Canada may be infected with a variety of gastro-intestinal nematodes other than Ascaris suum.
Metastrongylus species
Metastrongylus spp. are lung nematodes found in pigs. This parasite is present in many parts of the world and is only found rarely in Canada. Adult parasites live in the bronchi and bronchioles.
Setaria species
Nematodes of the genus Setaria infect cattle, sheep, sometimes other domestic animal hosts, and many free-ranging ungulates around the world, including in Canada.
Setaria species — pigs
Nematodes of the genus Setaria infect cattle, sheep, sometimes other domestic animal hosts, and many free-ranging ungulates around the world, including in Canada.
Trichinella species
Historically in Canada, infection of pigs with the zoonotic nematode Trichinella, specifically T. spiralis, was a significant public health concern, but currently the national pig herd is considered free of the parasite except for a possible small focus around Halifax, Nova Scotia.