412 



AGRICULTURE 



subject to tuberculosis. Many hogs have this disease in 

 some form. Its effects are seen in a stoppage of growth, 

 a general run-down appearance, loss of appetite, and in 

 some cases, death. Because hogs are kept so short a time, 

 and tuberculosis is so slow a disease, there is comparatively 

 little loss owing to deaths from tuberculosis. But many 

 animals when slaughtered are found to be unfit for food be- 

 cause of the disease. 



Two hogs: one a pure bred, the other a "razor-back." The 

 large one was owned and raised by the club boy, receiving 

 good care and a balanced ration. The small one, owned by a 

 farmer with old notions and habits, had poor care and a nar- 

 row ration. 



Tuberculosis is caught either from diseased pigs, or from 

 drinking the milk of tubercular cows. It is probable that 

 most of the tuberculosis in swine comes from the latter 

 cause. Many hog raisers now pasteurize the milk before 

 feeding it to the pigs. This is the only sure preventive 

 against tubercular milk. 



Hog cholera. By far the worse disease scourge af- 



