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 
