482 DISEASES OF SWINE 



diarrhea. One shoat was killed for the purpose of conducting a post- 

 mortem examination and making sure of the diagnosis of cholera. 

 The examination of the internal organs of this animal showed 

 some signs of hog-cholera, but the findings were not just what 

 could be called characteristic of hog-cholera. There were some 

 red spots in the lungs, some enlargement of the spleen, and a 

 slight congestion of the liver and kidneys. There was an absence, 

 however, of the turkey-egg spotting of the kidneys. A few small 

 ulcers were found in the first part of the large bowel or blind gut. 



Later history of this herd shows that on October 31, 1907, a 

 postmortem examination was made of a 100-pound shoat that 

 had died that day. This animal also showed about the same signs 

 of cholera as were found in the one just described. In the last- 

 mentioned shoat the congestion of the liver was more pronounced 

 and there were a number of well-marked ulcers in the large bowel. 

 The outbreak was one apparently of the chronic rather than the 

 acute type of hog-cholera. 



Treatment was given in this herd on October 22d. Fifteen 

 young boars, weighing about 100 pounds, were each treated with 

 20 c.c. of serum plus 1 c.c. of virulent blood. Seven yearling boars 

 received 40 c.c. of the same serum plus 1 c.c. of the virulent blood. 

 One yearling sow also received 40 c.c. of serum and 1 c.c. of virus 

 blood. Thirty shoats, which varied in size and weight from 50 

 to 100 pounds, received 20 c.c. of the serum alone. 



Five boars, 1 old sow, and 8 shoats were left untreated, to 

 serve as checks. 



The herd was again visited on October 31st for the purpose 

 of making an inspection and noting the effect of the treatment 

 given. At this time it was found that most of the 8 check 

 shoats were sick, and also 2 or 3 of the treated pigs. At this 

 time one of the shoats which had just died was opened up for 

 purpose of diagnosis. The results of this examination have 

 already been stated in the paragraph above. On this date there 

 were no signs of the appearance of the disease among the boars 

 which had been treated. 



On November 7th the herd was again visited. At this time 

 the boars were still well. A few days later the owner castrated a 

 number of them, including both checks and treated pigs. Soon 



