. Common diseases of farm animals. Veterinary medicine. CHAPTER XXVII TUBERCULOSIS Tuberculosis is a contagious and infections disease of man and domestic animals, that may affect any of the body tissues, but especially the lymphatic glands and the lungs. The charac- teristic diseased change that takes place in the tissues is the formation of the tubercle or nodule. History.âTuberculosis is one of the oldest of the known diseases of domestic animals and man. The contagious and infec- tious character of this disease was proven by Villemin in 1865, who by means of experimental in- fection transm
. Common diseases of farm animals. Veterinary medicine. CHAPTER XXVII TUBERCULOSIS Tuberculosis is a contagious and infections disease of man and domestic animals, that may affect any of the body tissues, but especially the lymphatic glands and the lungs. The charac- teristic diseased change that takes place in the tissues is the formation of the tubercle or nodule. History.âTuberculosis is one of the oldest of the known diseases of domestic animals and man. The contagious and infec- tious character of this disease was proven by Villemin in 1865, who by means of experimental in- fection transmitted tuberculosis from man to animals and from animal to animal. It was not until 1882 that Dr. Robert Koch discovered and proved by inoculation experiments'' that the disease was caused by a specific germ (Fig. 88). ' Prior to the experi- ments by VillemiTi and Koch, the common belief was that tuberculosis Fjq. ss.âKoch's BacUius tuber- T â â¢. culosis, greatly enlarged. was due to heredity, unsanitary con- ditions and inbreeding. Following the discovery of the spe- cific germ and the conditions that favored its development and spread, numerous scientifically conducted experiments were made. These experiments have finally resulted in practical methods of control and the elimination of tuberculosis from herds having this 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. Although the average stock- man is well informed regarding the character and economic importance of this disease, there is no general application of this knowledge, and tuberculosis is increasing in dairy and breeding herds. The slow development of tuberculosis, and the 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 ma
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectveterin, bookyear1915
