16 

 Enlarged Glands. 



Enlargements in tl:e region of the throat, especially when they cause 

 difficulty in breathing, are very apt to be due to tuberculosis. 



Loss of Appetite. 



This symptom is not seen until the latter stages of the disease, when the 

 animal is evidently wasting. 



Bloating. 



Sometimes the diseased glands in the chest prevent the usual passage of 

 gas from the paunch to the mouth by pressing on the gullet. In this case the 

 cow suffers from bloating and the paunch is often greatly distended with gas. 

 This, however, is not a very frequent symptom. 



Diarrhoea, 



Looseness of the bowels or " scouring " is seen in cattle affected with the 

 disease in the bowels. This kind of scouring cannot be cured by any known 

 treatment. 



Hard Lumps in the Udder. 



When tuberculosis attacks the udder, no change can be detected at firsts 

 but after a time hard lumps can be felt in some parts of the organ after it is 

 milked out. Milk from such an udder must not be used, as it is almost certain 

 to be teeming with germs of the disease. 



POST MORTEM APPEARANCES. 



When the carcass of a cow affected with tuberculosis is opened, the disease 

 may be found in any part of the body. Lumps (tubercles) may be present 

 in the substance of an organ such as the lung or liver, or they may be growing 

 on the surface. These lumps may be so small as to be scarcely noticeable, or 

 they may be as large as the closed fist, or even larger. If- one of the lumps 

 is cut open, the inside is yellowish and grits on the knife like sand, or else is 

 of a cheesy nature, soft and creamy or hard and dry. 



The lung is a favourite place for tubercles, and should always be 

 examined. Lymph glands are often the seat of- tuberculous changes. When 

 healthy a lymph gland is a little rounded body, not much larger than a good 

 s-ized bean, the largest only the size of one's thumb. They are found all through 

 the body and when healthy are so small as to attract very little attention. 

 Tuberculosis may cause them to grow to an enormous size, sometimes as large 

 as a child's head. In this condition they are similar to the tuberculous lumps 

 already described. Those lying between the lungs and in the throat are thn- 

 r/!0st frequently affected. 



Tubercles may be found in any part of the body, glands, luno;g, liver, 

 bowels, kidneys, womb, udder and even bones. The muscles and skin are 

 seldom affected. 



