The Prevention of Hog Diseases 475 



imbedded in the wall of the small intestine. It is from 

 3 to 10 inches long. 



The treatment of intestinal worms is both preventive 

 and medicinal. Hogs become badly infested with these 

 parasites by taking the eggs and embryos into the digestive 

 tract along with the feed and water. If confined in yards 

 and pastures that have become filthy through continuous 

 use, serious infestation of the intestines occurs. The 

 preventive treatment consists in not keeping hogs in the 

 same place throughout the year. Yards and pastures 

 should be so arranged that the hogs can be changed about, 

 and each lot rested for a few months during the year. 

 The feeding and drinking places should be kept clean. 

 The thorn-headed worm has an intermediate host, the 

 larvae of the May beetle, and pastures may remain 

 infested with the immature form of this parasite for a 

 long period. 



A combination of santonin and calomel is the most 

 satisfactory medicinal remedy for intestinal worms. The 

 dose for young hogs weighing from forty to eighty pounds 

 is 2 grains of santonin and 2 grains of calomel given in a 

 capsule. Hogs should be prepared for the treatment 

 by withholding all feed for at least twelve hours. By 

 dividing the drove into lots of ten to fifteen hogs, santonin 

 and calomel may be given in the feed. Santonin 3 to 5 

 grains and calomel 5 to 8 grains is the amount given for 

 each 100 pounds body weight. If the hogs are small and 

 it requires two or three to weigh 100 pounds, they should 

 receive the large dose ; if they weigh about 100 pounds, 

 they should be given the small dose. The drugs should 

 be mixed and divided into the same number of powders 

 as there are lots of hogs. Ground feed is placed in the 

 trough and dampened with water and the powder sprinkled 



