. The diseases of poultry . Poultry; 1899. DISKASES OF POULTRY. 185 crashed into powder. A microscopic examination of this powder reveals numerous mites and the debris which they produce. The disease appears in poultry-yards as a conse- quence of the introduction of one or more birds al- ready affected. It is teadily c o m m u n i cated, develops rapid- ly and in a few days a whole flock is con- taminated. It usually begins on the rump, the transfer of con- tagion being effected by copulation, and spreads rapidly to the back, the thighs and the belly. An infest- ed cock will rapidly infect all
. The diseases of poultry . Poultry; 1899. DISKASES OF POULTRY. 185 crashed into powder. A microscopic examination of this powder reveals numerous mites and the debris which they produce. The disease appears in poultry-yards as a conse- quence of the introduction of one or more birds al- ready affected. It is teadily c o m m u n i cated, develops rapid- ly and in a few days a whole flock is con- taminated. It usually begins on the rump, the transfer of con- tagion being effected by copulation, and spreads rapidly to the back, the thighs and the belly. An infest- ed cock will rapidly infect all the fowls in a poultry-yard. Often the head and the up - per surface of the neck ^re affected early in the course of the disease. The feathers fall off at all these points, and finally the skin is denuded over a large extent of surface. The large feathers of the tail and wings and the wing-coverts are generally retained. The denuded skin presents a normal appearance— it is smooth, soft, of a pinkish color and not percepti- bly thickened. By pulling out the feathers which remain near the invaded parts, it is easy to find, with both fowls and pigeons, a mass of epidermic scales at. Fig. ^^.^-Epidermoptes bilohatxts of the fowl; female, seen on the ventral surface; magnified ISO 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; Leeney, Harold. fmo; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. Washington, D. C. : G. E. Howard & Co.
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Keywords: ., bookauthorco, bookcentury1800, bookdecade1890, booksubjectpoultry
