A Note on the Presence of Ostertagia trifurcata in the Abomasum of a Sheep in England

Abstract

While examining the strongyles of the fourth stomach of an ewe belonging to the Cambridge University Farm, which had been slaughtered for post-mortem examination, numerous male and female Ostertagia circumcincta (Strongylus cervicornis of MacFadyean) were found. A few specimens of Haemonchus contortus were also present.