DISEASES OF THE HOG. 69 



CHAPTER VI. 



THE LIVER OF THE PIG. 



The liver of the pig consists of four chief lobes: 

 a right and left external, a right and left internal, 

 a small quadrate and a spigelian lobe. The gall- 

 bladder is large and is attached to the internal 

 lobe by cellular tissue. Diseases of the liver are 

 quite common in the pig, but they are so difficult 

 to diagnbse that they are ouh^ discovered on post 

 mortem. Diseases of this organ are very often as- 

 sociated with other diseases. By careful observa- 

 tion and practice a few of them can be determined 

 in the living pig. 



HEPATITIS. (INFLAMMATION OF THE LIVER.) 



Inflammation may affect the substance of the 

 liver, its investing peritoneal membrane, or both, 

 and may involve the whole organ or only a part 

 of it. 



Causes: Changes of temperature, such as from 

 cold to heat, injuries, and the result of other dis- 

 eases. It often occurs in high-bred pigs as a re- 

 sult of feeding with an excessive amount of stimu- 

 lating food and w^ant of exercise and is most com- 

 monly met with in hot weather. 



