. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 440 DISEASES OF THE BLOOD. and Kovelli afterwards found it in about 75 per cent, of the sheep slaughtered at Catania, Sicily. Source of Infection. Clinical observation and analogy point to unfiltered drinking water as the source of infection. Position of the Parasite. The worms are found in the veins of the abdomen, the vena porta, vena linealis, vena renalis, and the venous plexus of the bladder and of the rectum. Symptoms. The young parasites appear to do no injury; in fact, even the adult worms seem to be inoffensive in them
. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 440 DISEASES OF THE BLOOD. and Kovelli afterwards found it in about 75 per cent, of the sheep slaughtered at Catania, Sicily. Source of Infection. Clinical observation and analogy point to unfiltered drinking water as the source of infection. Position of the Parasite. The worms are found in the veins of the abdomen, the vena porta, vena linealis, vena renalis, and the venous plexus of the bladder and of the rectum. Symptoms. The young parasites appear to do no injury; in fact, even the adult worms seem to be inoffensive in themselves. The eggs, on the other hand, armed with a sharp point, are the exciting cause of the disease. The position of the parasite in the venous system, and. Fig. 206.—The bovine blood fluke {Schisto- soma bovis), male and female. X 9. (After Leuckart, 1894, p. 467, Fig. 204 A.). 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 Moussu, Gustave, 1864-; Dollar, John A. W. , joint author. New York, W. R. Jenkins
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