. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Bovine Tubeucttlosis. 151 they do not show evidence of tuberculosis for many years. I have known of a very large percentage of calves fed upon milk of diseased animals to give a good tuberculin reaction (thus showing the disease) before they were six months old. This is believed by the writer to be one of the very important ways by which the disease is disseminated in breeding herds. Tuberculosis is often found in swine fed upon milk from infected cows.
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Bovine Tubeucttlosis. 151 they do not show evidence of tuberculosis for many years. I have known of a very large percentage of calves fed upon milk of diseased animals to give a good tuberculin reaction (thus showing the disease) before they were six months old. This is believed by the writer to be one of the very important ways by which the disease is disseminated in breeding herds. Tuberculosis is often found in swine fed upon milk from infected cows. In 1903 the writer knew of a carload of hogs that had been purchased in a district where there were many tuberculous cows, and of which the first 59 of them that were slaughtered were all tubercu- lous. The remainder were not killed at that time. While such a condition may be considered an exception, it is a fact that many swine are infected, especially when they are fed tuberculous Fig 33.—Liver of a cow showing two small tubercular deposits. They were the onhj lesions found. The cow gave a typical tuberculin reaction. Natural size. Last year the United States meat inspectors condemned about 20,000 hogs for tuberculosis. It should be remembered that the greater the percentage of tuber- culous cows in the herd, and the further advanced the disease is in the cattle, the greater the danger of infection from the use of the milk. In cases where the disease is restricted to small nodules in the lymphatic glands, or perhaps in the lungs, the danger of tubercle bacilli being in the milk is very slight, but when the udder is tuber- culous they are constantly present in the milk and often in very large numbers. When calves or pigs are fed with milk of this kind, they are almost sure to be infected. The same result may follow when it is fed to children or Please note that these images are extracted from scanned page images that may have been digitally enhanced for reada
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