. Diseases of poultry; their etiology, diagnosis, treatment, and prevention. Poultry. 150 Diseases of Poultry function is performed by the sweat glands and the secretion of the kidneys. Birds have no sweat glands and the secre- tion of the kidneys contains relatively little moisture. The air passages are lined with mucous membrane and this membrane is the seat of several diseases. Diseases are easily. Fig. 28. — Cross section of two of the small air tubes 6f the lung of On the right the air passages are filled with black injection mass. On the left the arteries are similarly injected. (From Op
. Diseases of poultry; their etiology, diagnosis, treatment, and prevention. Poultry. 150 Diseases of Poultry function is performed by the sweat glands and the secretion of the kidneys. Birds have no sweat glands and the secre- tion of the kidneys contains relatively little moisture. The air passages are lined with mucous membrane and this membrane is the seat of several diseases. Diseases are easily. Fig. 28. — Cross section of two of the small air tubes 6f the lung of On the right the air passages are filled with black injection mass. On the left the arteries are similarly injected. (From Oppel, after Schulze.) transferred from one part of the respiratory system to another, since the passages and also the lining membranes are contin- uous from the nostrils to the air sacs. There are also diseases of the vascular part of the lungs. Some of these diseases are caused by unfavorable conditions as exposure to cold, drafts of air, or moist air or to improper food. Others are due to specific organisms. Most of the latter are con- tagious. Exposure to unfavorable conditions also reduces the ability of the birds to resist infectious 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 Pearl, Raymond, 1879-1940; Surface, Frank Macy, 1882-; Curtis, Maynie Rose, 1880-. New York, Macmillan
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpoultry, bookyear1915
