Miscellaneous Intestinal Nematodes

Trichostrongylus spp.:The "trichostrongyles" include several genera of economically important nematode parasites of domesticated livestock. The life cycles of most trichostrongyles are similar. The adult male and female worms live in the host's abomasum or small intestine, and eggs are passed in the feces. The eggs hatch and infective juveniles are ingested by the next host. The parasites can cause serious gastrointestinal upsets in infected hosts, resulting in severe diarrhea ("black scours") and significant economic losses. Several species of trichostrongyles have been reported as occasional parasites of humans.A Trichostrongylus egg.