the animal has been sick for eight to twelve days. There is muscle 

 soreness, dry skin, catarrhal discharge from eyes, watery bowel dis- 

 charges, loss of appetite, cough, depression, etc. 



Chronic Form. — When the animal lives from twelve to thirty days 

 it is referred to as the chronic form, in which we observe irregular 

 appetite, emaciation, weakness and general unthriftiness and indiges- 

 tion. The inflamed reddish blotches and "spots" on the skin may be- 

 come dry and hard, resulting in sloughing and sores. Sloughing of 

 the tail and ears and loss of hair are by no means infrequent sequelae 

 of hog cholera in the chronic form. 



The symptoms of cholera may be summarized as follows : 



1. Failure to come up for feed or refusal to eat. 



2. Huddling together in pens or nests. 



3. Cough. 



4. Stiffness indicated by staggering gait. 



5. Discharge from eyes and sticking together of eyelids. 



6. Redness of skin, especially noticeable in white hogs. 



7. Rise of temperature. 



8. Constipation alternated by profuse diarrhea. 



A casual or even careful examination — by the average stockman 

 or even the experienced graduate veterinarian — of a hog sick from 

 cholera does not reveal sufficient information to justify an unreserved 

 diagnosis of this disease. Experience has led us to believe that a 

 thorough post-mortem examination is imperative in order to establish 

 a trustworthy diagnosis. Whenever it is decided to determine the 

 cause of sickness or death in a hog the carcass should be carefully 

 opened up, in which event one or more — sometimes all — of the fol- 

 lowing lesions will be observed if cholera be the cause. 



Internal Lesions You May Expect on Post-Mortem Examination 



Whenever hogs have begun to die on a farm the owner should take 

 immediate steps to diagnose the disease. The best method of diag- 

 nosis is to carefully examine the carcass for lesions of disease. 



In hog cholera the following post mortem changes may be looked 

 for. It must be remembered that all of these lesions may not be 

 found in any one hog. 



Skin. — Red or purple spots may be observed on the hairless parts 

 of the body, especially in the skin of light-colored hogs. Look for 

 these skin lesions under the belly, between the hams and behind the 

 shoulders. In long standing or chronic cases the skin may crack and 

 the ears and tails slough off. 



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