16 SWINE DISEASES 



have a tendency to extend the head and elevate the 

 snout. There is usually a rise of temperature. Deglu- 

 tition is difficult and may be associated with gagging 

 and sometimes with vomition. There may be spasmodic 

 coughing. 



The treatment consists, in the mild^cases, in applying 

 soothing astringents; in the more severe cases, tincture 

 of iron chlorid may be used. Laxatives should be given 

 to keep the bowels in an active state, and the animals 

 should be placed in clean, well-ventilated quarters, and 

 given liquid and easily digested foods. 



Chronic tonsillitis is less common than the acute 

 form. It is characterized by distention of the tonsillar 

 tissue by accumulated desiccated pus or even calcareous 

 masses in the tonsillar crypts. 



PHARYNX 



The pharynx, like the mouth, is subject to trauma- 

 tisms and infection. 



Pharyngitis 



Catarrhal pharyngitis is the most common type of 

 inflammation, and may be either acute or chronic. The 

 usual cause of the disease is improper food or undue 

 exposure, although it may be caused by infection. 



The mucous membrane of the pharynx affected with 

 acute catarrh is in the beginning dry and scarlet red, 

 later becoming tumefied and coated with epithelium 

 and mucous, which occasionally desquamates, leaving 

 denuded areas. 



If the causative agent persists the condition becomes 

 chronic. The chronic condition is evidenced by fibrous 

 proliferation in the submucosa resulting, first, in a 

 tumefaction, and then in protrusion of the pharyngeal 

 mucosa, which may, by contraction of the newly formed 

 fibrous tissues, result in a corrugation of the mucous 

 membrane, or the newly formed fibrous tissues may be 

 so extensive that the pharyngeal mucosa becomes uni- 



