Ostertagia ostertagi, commonly known as the medium stomach worm or brown stomach worm, is a parasitic nematode (round worm) of cattle. O. ostertagi can also be found to a lesser extent in sheep, goats, wild ruminants, and horses. It causes ostertagiosis, which is potentially fatal in cattle. It is found worldwide and is economically important to cattle industries, particularly those found in temperate climates.
The abomasal nematode O. ostertagi is a clade V nematode of the order Strongylida, the family Trichostrongylidae and genus Ostertagia.[1] Ransom first described the genus Ostertagia in 1907, which currently contains approximately 15 species. All species of the genus Ostertagia infect domestic or wild ruminants. These species form a large and complex group, the taxonomy of which has not been fully elucidated.
^Blaxter, M. L., De Ley, P., Garey, J. R., Liu, L. X., Scheldeman P., Vierstraete, A., Vanfleteren, J. R., Mackey, L. Y., Dorris, M., Frisse, L. M., Vida, J. T., and Thomas W. K. 1998. A molecular evolutionary framework for the phylum Nematoda. Nature 392: 71–75.
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Ostertagiaostertagi, commonly known as the medium stomach worm or brown stomach worm, is a parasitic nematode (round worm) of cattle. O. ostertagi can...
ivermectin pour-on, albendazole, oxfendazole and fenbendazole against Ostertagiaostertagi inhibited larvae, other gastrointestinal nematodes and lungworm of...
resulting in easier lice infestations. The small brown stomach worm (Ostertagiaostertagi) is present in large numbers of herds in cooler, high rainfall areas...
infection alongside the infection caused by Ostertagiaostertagi and Haemonchus contortus. O. ostertagi and H. contortus cause more severe signs of infection...
in lamina propria lymphocytes of cattle following infection with Ostertagiaostertagi". The Journal of Parasitology. 83 (6): 1051–5. doi:10.2307/3284360...
75 °C (3.60–4.95 °F). On the other hand, the brown stomach worm, Ostertagiaostertagi, is predicted to become much less prevalent in cattle as the warming...
Cattle: Treatment of parasites such as the gastrointestinal nematode Ostertagiaostertagi, and the lungworm Dictyocaulus viviparus. Sheep: Treatment of the...
influence of a Cooperia oncophora priming on a concurrent challenge with Ostertagiaostertagi and C. oncophora in calves". Veterinary Parasitology. 70 (1–3): 143–151...
eight and the coxless four. After obtaining his PhD in the study of Ostertagiaostertagi, a parasite of cattle, McKellar remained at Glagow University in...
spathiger N. filicollis Parascaris — — For P. equorum in horses Ostertagia O. ostertagi O. circumcincta For O. bifurcum in humans Oesophagostomum O. radiatum...
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