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Story: Diseases of sheep, cattle and deer

Lungworm infestation

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Lungworm infestation

Lungworms infect several types of animals. The worms irritate the linings of air passages and cause coughing, which is most noticeable in sheep. It can also cause weight loss. Lungworm can be treated by drenching. Here, the lungworm Dictyocaulus filaria is shown in part of a lamb’s lung.

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Institute of Veterinary, Animal and Biomedical Sciences, Massey University

by Bill Pomroy

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How to cite this page

Gary Clark, Neville Grace and Ken Drew, Diseases of sheep, cattle and deer – Sheep diseases: worms, scab and anthrax, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/photograph/17422/lungworm-infestation (accessed 11 June 2026).

Story by Gary Clark, Neville Grace and Ken Drew, published 1 March 2009.