. The diseases of poultry . Poultry; 1899. 190 DISEASES OF POULTRY. falls into a decline which continues until the forces of the body are exhausted and it dies. During the course of the disease the affected birds give off a dis- agreeable odor which has been likened by some to that of moldy cheese and by others to the exhalations from mice, cat's urine, or macerating animal substances. Causation.— Favus is a contagious disease, and, as has already been stated, it is caused by a fungus which has been named Achorion Schonleinii. If a small particle of one *P of the crusts is taken, % .i>|t
. The diseases of poultry . Poultry; 1899. 190 DISEASES OF POULTRY. falls into a decline which continues until the forces of the body are exhausted and it dies. During the course of the disease the affected birds give off a dis- agreeable odor which has been likened by some to that of moldy cheese and by others to the exhalations from mice, cat's urine, or macerating animal substances. Causation.— Favus is a contagious disease, and, as has already been stated, it is caused by a fungus which has been named Achorion Schonleinii. If a small particle of one *P of the crusts is taken, % .i>|t-i>' |\ placed upon a glass 1'« slip and moistened with water or dilute acetic acid and sub- mitted to microscopic examination at a magnification of 300 to 500 diameters, it is seen to be made up of threads or mycelium of tlie fungus held to - gether by a thick, viscid, gelatinous sub - stance which it se- Frg-. 54.—The Achorion Srhovleiiiii of the favus of poultry; mag-nified 800 diameters. CreteS. NumeroUS tv, empty tubes; tp, tubes filled with , protoplasm and containing' spores; i, iso- Spherical O r OVoid lated spores. Spores are also visible both within the filaments and in a free condition. An examination of the feathers on the affected parts re - veals the fact that the fungus has penetrated the shaft, filled it with crusts, and has in some cases even reached the barbs. The disease may be inoculated from bird to 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
