Tuberculosis 381 



Tuberculosis is important not only on account of the 

 losses among cattle, but because of its relation to the 

 public health. Milk from cows that are badly affected 

 with tuberculosis, and especially when the udder is 

 affected, is considered to be dangerous as food for man, 

 unless it is pasteurized by heating it to a temperature 

 of 185° Fahr. 



Tuberculosis is one of the most insidious diseases of 

 animals, as it attacks almost any part of the body, and 

 a great variety of symptoms follow as soon as it is well 

 established. Symptoms vary according to the severity 

 of the disease and the part or organ of the body affected. 

 Tuberculosis attacks the lungs most frequently; the 

 liver, diaphragm, or "midriff," lymphatic glands, bones 

 or joints may also be the seat of the disease. When the 

 lungs are attacked and become badly diseased, the 

 animal is out of condition and falls away in flesh; the 

 appetite is capricious; the coat is rough and staring; 

 the eyes are sunken and dull. There is usually a cough, 

 that is especially noticeable when the animal is first 

 disturbed in the morning, or when it is turned out to 

 exercise in cold air. There is often a discharge from 

 the nose and eyes, this drying at the inner corner 

 of the eye. When the udder is affected, there is slight 

 inflammation of that part of the gland, followed by 

 the formation of hard lumps within the gland; in some 

 cases, these lumps gather and break, discharging a 

 yellowish pus. 



The germs of the disease, when scattered about 

 stables or yards, may enter the system of a healthy 

 animal through wounds ( which is probably a rare 



