Experimental Ostertagia infection of sheep: Pathology following a single high dose of larvae

Abstract

Extract

One, of the authors (Elliott, 1974) noted that two sheep developed severe inappetance and listlessness five days after dosing with infective Ostertagia larvae, at rates of 1 × 10⁶ and 1.4 × 10⁶, respectively. The higher dosed animal died 10 days after dosing, showing at autopsy a severe abomasitis, while the other sheep recovered. Death of a sheep following a single high dose of Ostertagia larvae had not aparently been previously reported