. Cyclopedia of farm animals. Domestic animals; Animal products. INFECTIOUS DISEASES OF ANIMALS 133 Nature, Cause and Economic Importance of Ovine Caseous Lymph-Adenitis, Sixteenth Annual Report, Bureau of Animal Industry, p. 638 (1899). (Full bibliography).] Swine erysipelas.—This is an infectious disease peculiar to swine. It is determined by a rise in temperature, cerebral disturbances and pronounced reddening of areas of the skin. It is a disease of adult life. It is stated that pigs are rarely attacked under three months or over three years of age. Lydtin and Schottelius found some differ
. Cyclopedia of farm animals. Domestic animals; Animal products. INFECTIOUS DISEASES OF ANIMALS 133 Nature, Cause and Economic Importance of Ovine Caseous Lymph-Adenitis, Sixteenth Annual Report, Bureau of Animal Industry, p. 638 (1899). (Full bibliography).] Swine erysipelas.—This is an infectious disease peculiar to swine. It is determined by a rise in temperature, cerebral disturbances and pronounced reddening of areas of the skin. It is a disease of adult life. It is stated that pigs are rarely attacked under three months or over three years of age. Lydtin and Schottelius found some differences in the degree of susceptibility of certain breeds of swine; the common country pig was least susceptible. It occurs enzootically and in epizootics in most of the countries of Europe. It is caused by a very slender bacterium. The period of incubation is stated to be at least three days, although it is apparently longer than that in many cases. Jensen describes five distinct forms of this malady, namely, true erysipelas, swine urticaria, erysipelas without red- ness of the skin, diffuse necrotic erysipelas of the skin, and endocarditis of erysipelas. Its duration varies from one to ten days; in types of moderate severity it runs three to four weeks. The prognosis is unfavorable. There is 20 to 80 per cent mortality. Swine plague.— Swine plague is an infectious disease of swine occurring sporadically and in epi- zootics. It appears usually as a septicemia or a pneumonia in which there is marked consolidation of the ventral and cephalic lobes and the cephalic part of the principal lobe of one or both lungs. There may or may not be pleuritis. There may be marked changes in the intestine, consisting of superficial necrosis of the mucosa, especially in the ileum and coecum. For this reason it has been con- sidered by some writers as an infectious pneumo- enteritis. It is a wide-spread disease in this coun- try, occurring more or less frequently in every state. Swine plague i
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