Diseases of poultry; their etiology, Diseases of poultry; their etiology, diagnosis, treatment, and prevention diseasesofpoultr00pear Year: 1915 to be composed of numerous mites and their debris. The irritation of the mites often causes the birds to pull their own feathers. Birds affected often pull each others' feathers. Some of the so-called feather eating is due to the presence of this parasite, but fowls sometimes pull each others' feathers when the parasite is not present. Salmon says this disease does not affect the general health of the bird and does not appear to disturb gain in fles
Diseases of poultry; their etiology, Diseases of poultry; their etiology, diagnosis, treatment, and prevention diseasesofpoultr00pear Year: 1915 to be composed of numerous mites and their debris. The irritation of the mites often causes the birds to pull their own feathers. Birds affected often pull each others' feathers. Some of the so-called feather eating is due to the presence of this parasite, but fowls sometimes pull each others' feathers when the parasite is not present. Salmon says this disease does not affect the general health of the bird and does not appear to disturb gain in flesh or egg pro- duction, but Theobald says that the disease checks egg lay- ing in hens and affected cocks become emaci- ated and some- times die. Etiology.—The mite Sarcoptes loBvis which causes this dis- ease is smaller than the one which causes scaly leg. They live at the base of the feathers in the epidermal debris referred to above. A flock becomes infested by the intro- duction of one or more birds carrying the mites. The mites are spread from bird to bird by the male in copulation. The distribution is often very rapid so that the whole flock is soon affected. Treatment. — The disease should be prevented by taking care not to introduce infested birds. If it appears, all affected birds should at once be isolated. The mites yield easily to treatment. The infested areas may be rubbed with some Q — Egg containing female Sarcoptes loevis var. gallince. (After Theobald.)
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