' Hog Cholera 391 



estimate the loss to be greater than that resulting from 

 all other diseases of animals combined. Hog cholera 

 and swine plague are the greatest drawbacks to the 

 swine -raising industry in the central and western states. 

 These diseases are usually found in regions where hogs 

 are raised in large numbers, where there is a large 

 amount of traffic in swine, where they are fed largely 

 on one kind of food, and where the sanitary and hy- 

 gienic conditions are bad. It must not be inferred 

 that hygiene and sanitation will prevent these diseases 

 entirely. When the infection of hog cholera is intro- 

 duced among healthy swine with the most hygienic 

 surroundings, heavy losses are very likely to follow. 

 And yet it is probable that if careful attention were 

 paid to feeding, care and sanitation, together with 

 reasonable precautions to prevent the introduction of 

 the infection of hog cholera, the losses could be reduced 

 one -half. 



In the care of hogs, the essentials are clean quarters 

 and pure water. When hog cholera is in the vicinity, 

 care must be exercised not to allow swine access to 

 streams where disease prevails above them, as cholera 

 frequently follows brooks and rivers. A variety of food is 

 also essential to the maintenance of good health. Swine 

 are omnivorous animals, living upon both animal and 

 vegetable materials. When fed largely on one kind of 

 food, such as corn, they get fat and appear healthy, 

 but such animals are susceptible to hog cholera, and 

 among such the disease is likely to assume a virulent 

 type. 



In addition to variety in food, swine should have 



