BOVINE TUBERCULOSIS. 



153 



der the skin with a hypodermic syringe. Temperatnre is taken 

 before and after the injection. A pronounced rise of tempera- 

 ture (2 degrees F., or more) orchnarily shows the presence of 

 tuberculosis. 



Treatment is not practical. It is usually advisable to destroy 

 or isolate diseased animals at once. 



Prevention. — Stockmen should breed with a view to increas- 

 ing physical vigor instead of breeding fit subjects for tubercu- 

 losis, as many are doing. Bear in mind that an animal may give 

 a fine physical appearance, and yet be easily susceptible to disease 

 or be actuallv diseased. 



FIG. 59. BOVINE TUBERCULOSIS. (M. II. R.) 

 A great variety of tubercles on the chest lining (costal pleura). Sternum 

 below, broken ribs above. 



The practice of keeping cattle almost continuously in the 

 stable does not harmonize with plain teachings of physiology, and 

 the results of this practice must sooner or later be disastrous. 

 The great law of animal life, that use begets strength and idle- 

 ness begets disease, applies to lungs, as well as to muscles, and 

 must always hold true. Animals cannot remain permanently 

 healthy without a reasonable amount of exercise, sunshine and 

 fresh air. If lungs are used less than nature intended, thev must 



Vet. Studies— 10. 



