236 FARM ANIMALS 



worms wnich are usually not of great importance 

 and also with, at least, two parasitic worms which 

 infest man. These are the hog measle worm and 

 trichina. Neither of these parasites, however, is 

 a serious matter in this country for the reason 

 that the habit of eating raw pork is fortunately 

 very limited and both of these parasites are de- 

 stroyed by the cooking of the meat. In order to 

 prevent the infestation of hogs with trichina it 

 is merely necessary to feed them wholesome 

 materials and not allow them to eat offal and 

 rats around slaughter-houses. 



In some localities young pigs may become badly 

 infected with canker sore mouth. This disease 

 usually appears soon after birth and up to the age 

 of six weeks. Blisters appear in the mouth, fol- 

 lowed by scabs and ulcers in the mouth, on the 

 jaws, and as the disease progresses, on the head 

 and neck. A good remedy for this trouble has 

 been found in permanganate of potash in a solu- 

 tion in water at the rate of one ounce to a gallon. 

 The solution is placed in a pail and the pig's 

 head immersed for a few seconds, the operation 

 being repeated frequently. 



Occasionally considerable difficulty is expe- 

 rienced from sows eating their pigs. This habit 

 most frequently develops in the case of large 

 litters and some breeders believe that a difference 

 is noticeable in the different breeds in this respect. 

 The observations along this line, however, are 

 somewhat unreliable. The causes which are usu- 

 ally mentioned for this vicious habit on the part 

 of sows include keeping them in pens without 

 suitable exercise, use of too much animal food, 

 digestive troubles, constipation and inflammation 

 of the udder. The use of animal food cannot 



