Ostertagia

von Ostertag,

Robert, German veterinarian, 1864-1940.
Ostertagia - genus of stomach worms that are found primarily in cattle.
ostertagiasis - infection caused by Ostertagia. Synonym(s): ostertagiosis

Ostertagia

a genus of worms in the family Trichostrongylidae. They are found in the abomasum, rarely the intestine, of ruminants, are thin and brown and called brown stomach worms. They cause ostertagiasis. Includes O. bisonis (cattle, wild ruminants), O. circumcincta (goats, sheep), O. crimensis syn. O. leptospicularis, O. hamata (springbok), O. leptospicularis (cervid deer, cattle), O. lyrata, syn. Skrjabinagia lyrata, Grosspiculagia lyrata (cattle), O. orloffi (Barbary sheep, cattle, deer), O. ostertagi (cattle, goats, rarely sheep, horses), O. podjapolskyi, syn. Grosspiculagia podjapolskyi (cattle, sheep, moufflon), O. trifurcata (sheep, goats, also cattle).
References in periodicals archive ?
Nematodes infected buffalo treated with Levamisole: Levamisole reduced (99%) mean EPG of Haemonchus and Ostertagia and (100%) reduced the EPG of Trichostrongylus, Namatodirus and Trichuris on post treatment day 28th.
These endectocides with the active ingredient moxidectin offer persistent killing of internal parasites at multiple stages, including the most economically devastating parasite, Ostertagia ostertagi (brown stomach worm) and controls external parasites including lice, grubs and psoroptic mange mites on beef and dairy cattle.
axei, Ostertagia sp, Cooperia sp, Oesophagostomum sp, Trichuris ovis, Strongyloides papillosus, Bunostomum sp y, con mayor frecuencia, Haemonchus contortus (Kaplan et al.
Inhibition of bovine T lymphocyte response by extracts of the stomach worm Ostertagia ostertagi.
Ostertagia, Trichostrongylus and Cooperia species against Benzimidazoles, imidazothiazoles and macrocyclic lactones while Fasciola hepatica against benzimidazoles.
Los resultados encontrados en la presente investigacion demuestran una prevalencia total de generos de nematodos gastrointestinales en las 10 UP, se observa que el genero de nematodo mas prevalente fue Cooperia, ocupando el 49% de la infestacion total de nematodos; seguido de Ostertagia con un 15%, Haemonchus 15 %, Trychostrongylus 7%, Moniezia 5%, Toxocora vitolorum 4%, Trichruris ovis 4% y Chavertia ovina 1%.
Sobre los NGI del ganado hay menos trabajos reportados, en algunos de ellos se ha determinado la distribucion de las larvas de Trichostrongylus en pastizales de bovinos en pastoreo (Gruner & Sauve 1982), la disposicion espacial de Ostertagia en el abomaso de bovinos (Morales et al.

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