. Common diseases of farm animals. Veterinary medicine. CHAPTER XXVII TUBERCULOSIS TuBEKCULOsis IS a contagious and infectious disease of man and domestic animals, affecting any body tissues, but esi)ecially the lymphatic glands and lungs. The characteristic diseased change in the tissues is the fonnation of the tubercle or nodule. History.—Tuberculosis is one of the oldest of known diseases of domestic animals and man. Its contagious and infectious char- acter was proven by Villeniin in 1S05, who by experimental in- fection transmitted tuberculosis from man to animals and from animal to anima
. Common diseases of farm animals. Veterinary medicine. CHAPTER XXVII TUBERCULOSIS TuBEKCULOsis IS a contagious and infectious disease of man and domestic animals, affecting any body tissues, but esi)ecially the lymphatic glands and lungs. The characteristic diseased change in the tissues is the fonnation of the tubercle or nodule. History.—Tuberculosis is one of the oldest of known diseases of domestic animals and man. Its contagious and infectious char- acter was proven by Villeniin in 1S05, who by experimental in- fection transmitted tuberculosis from man to animals and from animal to animal. It was in 1882 that Dr. Rob- ert Koch discovered and proved by in- oculation experiments that the disease was caused by a specitic genu (Fig. 88). Prior to the experiments by Ville- min and Koch, the belief was that tuber- culosis was due to heredity, unsanitary conditions and inbreeding. Following ^^°- ss.—Koch's Badiius tuber- culosis. discovery of the specific germ and con- ditions favoring its development and sjiread, numerous scientifi- cally conducted experiments were made. These have resulted in practical methods of control and elimination of tuberculosis from herds having tliis disease. By carefully conducted experi- ments and other forms of educational work the infectious charac- ter of tuberculosis and the economic importance of preventive measures have been demonstrated. The average stockman is well informed regarding the character and economic impor- tance of this disease, but there is no general application of this knowledge, and tuberculosis is increasing in dairy and breeding herds. The slow development of tuberculosis, and tlie absence of 283. 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-. Philadelphia London, J. B. Lippincott company
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Keywords: ., bookpublisherphilad, booksubjectveterinarymedicine, bookyear1919
