. The diseases of poultry. 212 DISHASKS OF POULTRY. the body are affected—the tubercles beiiii^ found even in the interior of the bones. The joints are fretiuently the seat of tubercular in- flammation leading to swelling, abscesses, ulcers, fistulas and loss of movement. Swellings, ulcers, and cheesy formations are some- times seen about the mouth, eyes and nose, and horny excrescences may ai:)pear upon the skin of the head. These external mani- festations are the rule with i)arrots. Cause and Na- ture.— The tubercu- losis of birds, like that of mankind, is caused by a l)acillus. The bacillus
. The diseases of poultry. 212 DISHASKS OF POULTRY. the body are affected—the tubercles beiiii^ found even in the interior of the bones. The joints are fretiuently the seat of tubercular in- flammation leading to swelling, abscesses, ulcers, fistulas and loss of movement. Swellings, ulcers, and cheesy formations are some- times seen about the mouth, eyes and nose, and horny excrescences may ai:)pear upon the skin of the head. These external mani- festations are the rule with i)arrots. Cause and Na- ture.— The tubercu- losis of birds, like that of mankind, is caused by a l)acillus. The bacillus of birds in a general way resembles that of man, but is larger, more vigorous and hard}', and grows Fig. 63.—Section of liver of bird affected better outside of the with tuberculosis, body. The disease is strictly contagious, and usually appears in a flock as a consequence of brin;- ing in new birds. That is, it results from contagion carried by birds from other diseased flocks. Many outl)reaks have been attributed to infection from eating the sputum of persons affected with co:i- sumjnion. The ]:)Ossibility of such infection is ad-. 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, bookcollectionamer, bookdecade1890, bookyear1899
