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INTESTINAL WORMS OF SHEEP. The most widely distributed and seemingly most injurious intestinal worm of sheep is the OEsopliagostomum columbianum. It penetrates the lining membrane of the intestines and encysts in the intestinal wall. A tumor, varying in size from that of a millet seed to a hazelnut, then forms in the wall of the intestine.
Species Organ Haemonchus contortus Abomasum Ascaris ovis Small intestine Strongylus filicollis Small intestine Oesophagostomum columbianum Intestines Uncinaria cernua Small intestine Trichocephalus affins Large intestine Strongylus filaria Bronchi Strongylus rufescens Bronchi and air follicles
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