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
Photograph by Bill Pomroy
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