Diseases of poultry; their etiology, Diseases of poultry; their etiology, diagnosis, treatment, and prevention diseasesofpoultr00pear Year: 1915 Diseases of the Respiratory System 181 mucous membrane of the air-sacs and bronchi. When the number of parasites is small they cause no serious inconven- ience to the bird. When there are a large number present they may cause inflammation of the membrane and secretion of mucus or they may seriously obstruct the air passages. Treatment. — Treatment of infested birds is probably use- less. Feeding sulphur with the food or compelling the birds to inhal
Diseases of poultry; their etiology, Diseases of poultry; their etiology, diagnosis, treatment, and prevention diseasesofpoultr00pear Year: 1915 Diseases of the Respiratory System 181 mucous membrane of the air-sacs and bronchi. When the number of parasites is small they cause no serious inconven- ience to the bird. When there are a large number present they may cause inflammation of the membrane and secretion of mucus or they may seriously obstruct the air passages. Treatment. — Treatment of infested birds is probably use- less. Feeding sulphur with the food or compelling the birds to inhale the fumes of burning sulphur or burning tar or the steam of boiling tar water has been recommended. If a flock is infested with this parasite it is best when possible to start a new flock with incubator chicks raised on a new range and carefully protected from infection from the old flock. Or stock may be purchased from an un- infested flock. Birds with this parasite should not be bought or sold for breeding or laying purposes, as the Fig flock into which they are in- troduced will become infested from them. Since this parasite cannot live long outside the bird's body, the houses, runs, etc., do not remain in- fested long after all the diseased birds have been removed. Prognosis. — A bird once infected is probably never free from the parasite but may live a long time little harmed by its presence. 33. — Cytodites nudus. The air-sac mite. Greatly enlarged. (After Theobald.)
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