DISEASES OF THE HOG. 123 



CHAPTER X. 

 DISEASES OF THE HEART. 



Disease of the heart is of very rare occurrence 

 as an independent disease in the pig, as their life 

 is short and the great majority of them are sent to 

 market before it has time to develop; but the heart 

 is very frequently affected in conjunction with 

 other diseases. Although I have had no well 

 marked cases of this derangement in the pig and 

 there has been nothing written on this subject, yet 

 I have no doubt but that some of the sudden deaths 

 which sometimes occur in the hog are due to some 

 form of heart disease. The animal is usually in 

 such apparent good health up to the time of death 

 that no warning is given and it is only after mak- 

 ing a post mortem examination that the true nature 

 of the disease is discovered. 



PERICARDITIS 

 (INFLAMMATION OF THE PERICARDIUM.) 



Pericarditis is an inflammation of the capsule 

 surrounding the heart and reflected over it. Endo- 

 carditis is an inflammation of the membrane lininc 

 the cavities of the heart. Carditis is an inflamma- 

 tion of the substance of the heart itself. As it is im- 

 possible to diagnose the one from the other in the 



