Diseases of poultry; their etiology, Diseases of poultry; their etiology, diagnosis, treatment, and prevention diseasesofpoultr00pea Year: 1915 Diseases of the Circulatory System 191 shows enlargement of liver and spleen. The crisis of the disease occurs on the fourth or fifth day. In fatal cases the fever disappears and the temperature sinks to below normal shortly before death. Etiology. — This disease is caused by a spirochsete (Spiro- chceta gallinarum) found in the blood and in the liver and spleen. According to Balfour the parasitic organisms Fig. 34. — Bird suffering from spirochs
Diseases of poultry; their etiology, Diseases of poultry; their etiology, diagnosis, treatment, and prevention diseasesofpoultr00pea Year: 1915 Diseases of the Circulatory System 191 shows enlargement of liver and spleen. The crisis of the disease occurs on the fourth or fifth day. In fatal cases the fever disappears and the temperature sinks to below normal shortly before death. Etiology. — This disease is caused by a spirochsete (Spiro- chceta gallinarum) found in the blood and in the liver and spleen. According to Balfour the parasitic organisms Fig. 34. — Bird suffering from spirochsetosis. (From Kolle and Hetsch.) enter the blood corpuscles. Both the organisms and the corpuscles then degenerate. According to Lounoy and Bruhl the number of erythrocytes may be reduced one- half in five days. A favorable turn at the crisis of the dis- ease is due, according to Levaditi and Manouclian, to the Balfour, A. S., 'Spirochaetosis of Sudanese Fowls — an After Phase.' Jour. Trop. Med. and Hyg., Vol. 11, p. 37, 1908. 2 Lounoy, L., and Bruhl, M. L., Ann. Inst. Pasteur, T. 28, pp. 517-539, 1914. Levaditi and Manouclian, Ann. Inst. Pasteur. T. 20, pp. 593-600, 1906.
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