. The diseases of poultry. Poultry. 184 DISEASES OF POULTRY. and the wings themselves, that are found diseased. The appearance of the affected parts resembles closely that seen in favus—the disease caused by the \egetable parasite known as the Aclwn'ofi Schonlcinii. Some have, therefore, suspected that the disease is really due to this fungus and that the mites are inno- cent of pathogenic action. The truth must be de- termined by future investigations. SCABIES CAUSED BY SARCOPTES—DEPLUMING SCABIES. This form of scabies was first observed by Railliet and Cadiot, in 1885, on a Homing Pigeon fro
. The diseases of poultry. Poultry. 184 DISEASES OF POULTRY. and the wings themselves, that are found diseased. The appearance of the affected parts resembles closely that seen in favus—the disease caused by the \egetable parasite known as the Aclwn'ofi Schonlcinii. Some have, therefore, suspected that the disease is really due to this fungus and that the mites are inno- cent of pathogenic action. The truth must be de- termined by future investigations. SCABIES CAUSED BY SARCOPTES—DEPLUMING SCABIES. This form of scabies was first observed by Railliet and Cadiot, in 1885, on a Homing Pigeon from Brus- sels. It was lat^er found by Railliet to be a frequent af- fection of fowls. It is caused by the mite known as the Sarcoptcs hrvis. The parasite found on the pig- eon is not exactly the same as that found upon fowls although both belong to the same species. The variety which lives upon the pigeon is distinguished by the term cohimbcs, and that which lives upon fowls b}^ the of the fowl;'male, "seen on t'le fp^m (rnllh),p Tlic> rUcpqcp ventral surface; magnified 150 Leilll ^a/////^/-. J. 11 v. Clisease diameters. jg most commou iu Spring and Summer, disappearing in the Fall when the birds molt, and is seen again towards Spring. The principal sj^mptom of this trouble is a loss of feathers from spots of various sizes, situated on differ- ent parts of the body. The feathers break off at the surface of the skin, and at the root of the feather is seen a small mass of epidermic scales which is easily. i.'i.—Epidtrmoptis hiUthntus. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Salmon, D. E. Washington, D. C. , G. E. Howard & co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpoultry, bookyear1899
