. Diseases of swine : with special reference to the preventive measures of disease . Swine. INFECTIOUS DISEASES 121 lose their vigor and may show unthriftiness. This is no doubt one cause for the disease being so prevalent in the corn-belt. Period of Incubation.^The shortest period of incubation is two days, the longest three or four weelcs. This depends on the susceptibility of the animals, the activity of the germ and the manner. FIG. 12—A COLERA HOG of infection. An acute attack indicates a short period and a mild or chronic one a long period. Usually, from one to two weeks will elapse from
. Diseases of swine : with special reference to the preventive measures of disease . Swine. INFECTIOUS DISEASES 121 lose their vigor and may show unthriftiness. This is no doubt one cause for the disease being so prevalent in the corn-belt. Period of Incubation.^The shortest period of incubation is two days, the longest three or four weelcs. This depends on the susceptibility of the animals, the activity of the germ and the manner. FIG. 12—A COLERA HOG of infection. An acute attack indicates a short period and a mild or chronic one a long period. Usually, from one to two weeks will elapse from the time the animal is exposed until it comes down with the disease. Symptoms.—Three different forms of hog chol- era occur, and for this reason the disease does not. 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 Craig, Robert Alexander, 1872-. New York : O. Judd Company
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1906
