DISEASES OF THE HOG. 73 



Serous Cysts and Hydatids. This is a common 

 disease in the pig as well as in the other domestic 

 animals. I have seen a great many cases of it. 

 The cysts consist of sacs containing watery fluid. 

 There are two kinds, one consisting of a single sac, 

 the other of a sac containing within it one or more 

 sacs. There ma}' be only a few cysts scattered 

 over the liver, or in bad cases it may have the ap- 

 pearance of being converted into cysts, filling the 

 whole liver. These cysts contain a parasite called 

 a hydatid the origin of which is uncertain. When 

 upon the surface of the liver they may break and 

 cause peritonitis b}^ the escape of their contents, 

 producing death. An animal may be affected 

 with this trouble for a long time and the health re- 

 main good, as I have found them in the liver of pigs 

 that have been killed for food, and they did not 

 seem to have affected them in any way. On the 

 other hand I have examined pigs that had died, 

 and found the liver in a morbid condition, having 

 undergone a number of changes affecting the 

 health of the animal sujficiently to cause death. 



JAUNDICE. 



This is not a common disease in the pig. It is 

 characterized by a yellowish color of the skin, eyes 

 and urine. It is the result of absorption of bile 

 into the tissues of the body, and is usually easily 

 remedied in the young animal. 



Symptoms: There is usually loss of appetite, 

 dulness, sometimes vomiting, and other signs of 

 deranged digestion, soon the feces become of a 



