490 DISEASES OF SWINE 



At the time the herd was visited by the bureau representatives 

 one shoat had already died, and several others were showing char- 

 acteristic symptoms of hog-cholera. As the animals were all very 

 valuable, none of them were killed for the purpose of making a post- 

 mortem diagnosis. The supply of serum on hand at this time was 

 very small and it was necessary to leave a considerable number of 

 the animals untreated as checks. These checks were mostly bar- 

 rows and smaller gilts. 



Treatment in this herd was carried out as follows: A boar, 

 weighing about 200 pounds, and which was already showing symp- 

 toms of hog-cholera, was given 70 c.c. of serum alone. Two 

 boars, weighing about 140 pounds each, both of which also showed 

 symptoms of the disease, were given 40 c.c. each of the same 

 serum. Eleven boars, weighing from 100 to 200 pounds each, all 

 probably more or less affected, were given 30 c.c. each of the serum. 

 Two shoats, probably also infected, received 40 c.c. each of serum. 

 Three shoats, of an average weight of about 50 pounds, were given 

 20 c.c. of serum. Thirty-three shoats of different weights were 

 given 30 c.c. each of serum. 



One old sow with a litter of young pigs was given 40 c.c. of 

 serum. Four of her pigs received 20 c.c. each of the same serum, 

 while 3 other pigs of the same litter were left untreated as checks. 

 There was another old sow with a litter of pigs on the farm. 

 Seven of these pigs were treated with 20 c.c. each of serum. The 

 sow herself and the balance of her litter were left untreated as 

 checks. Both of these litters were about two months old. Five 

 old sows received 50 c.c. of serum alone. 



Twenty-seven shoats of various sizes were left untreated to 

 serve as checks. The large number of untreated checks left in this 

 case has already been explained as due to the fact that the supply of 

 serum on hand at that time was limited. 



The reports of the results from the treatment of this herd is 

 quite interesting. Of the 14 boars that were treated, only 2 died. 

 It will be remembered that 3 of these animals showed symptoms 

 of the disease at time of treatment, and the other 1 1 had been ex- 

 posed for several days and were no doubt affected. The one old 

 boar that received the 70 c.c. of serum showed improvement for a 

 few days and then became worse, finally dying. It would seem 



