The adult hair worm or black scour worm (Trichostrongylus species) is found in the small intestine of goats and sheep. It can cause severe diarrhea in young animals and chronic diarrhea in older animals.

Additional animations describing the life cycles of parasites that infect the goat.

Cryptosporidium
Eimeria spp. (coccidian)

Dictyocaulus vivparus (lungworm)
Muellerius capillaris (goat lung worm)

Fasciola hepatica (liver fluke)

Haemonchus contortus (barber pole worm)
Ostertagia circumcincta (brown stomach worm)
Trichostrongylus spp. (hair worm)
Nematodirus spp (thin-necked intestinal worm)
Oesophagostomum columbianum (nodular worm)
Strongyloides papillosus (common thread worm)

Parelaphostrongylus tenuis (brain or meningeal worm)
Trichuris ovis (whipworm)
Moniezia expansa (tapeworm)

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