122 



DISEASES OF SWINE 



present a specific set of symptoms. The symp- 

 toms can be divided into acute, subacute and 

 chronic. 



In the acute form, which is the most common, 

 an elevation in the body temperature of from one 

 to three degrees, marked depression and loss of 

 appetite are among the first symptoms. Vomiting 

 may also occur. In some cases there is an in- 

 clination to eat earth and other indigestible sub- 



FIG. 13 — A CHOLEKA PIG 



stances. Usually, the hog goes off by itself and 

 hunts a cool, quiet place and lies down, or bur- 

 rows under the litter and hides. Tremors sug- 

 gestive of a chilling of the body may be noticed. 

 The inflammation of the intestines and soreness 

 of the abdominal walls cause the hog to arch the 

 back, carry the hind parts stififly, stagger, and cross 

 the hind feet when it moves about. 



