118 SWINE DISEASES 







souri's most famous boars, Chief Tecumseh II, were 

 cryptorchids. Liberty Chief and Chief I Know, two 

 boars sired by Chief Tecumseh II, were noted breeders, 

 and from three to five per cent of their get were cryp- 

 torchids. Chief Perfection II, sired by Chief Tecumseh 

 II, was the sire of Chief Cherokee Perfection, that in 

 turn sired about three per cent of cryptorchids. Cryp- 

 torchidism diminishes the value of a pig because of the 

 greater castration risk. 



Because of their location, the testicles of a boar are 

 subject to injuries of various kinds. Some instances 

 have been observed in which it was necessary to castrate 

 valuable boars that had their testicles so lacerated that 

 recovery of the function of them was not possible. In- 

 juries may be inflicted by dogs, sharp-cutting objects, or 

 by crushing, as a result of cattle or horses treading upon 

 the glands. 



Orchitis and Epididymitis 



Inflammation of the testicle has been observed, but 

 is not of common occurrence in swine. Orchitis and 

 epididymitis are not easily differentiated. They are most 

 frequently the result of mechanical injury, although 

 they may result from infection. Tuberculous orchitis is 

 not uncommon in swine. 



Lesions. The affected testicles or epididymi are en- 

 larged and hyperemic. The secreting structure have a 

 parboiled appearance. Suppurative orchitis is charac- 

 terized by the formation of abscesses, or it may assume a 

 diffuse form of suppuration in which pus infiltrates the 

 tubular and intertubular tissue. 



Microscopically, the arterioles and capillaries are 

 gorged with blood, and there is exudation into the 

 seminiferous tubules and intertubular spaces of leukocytes 

 and plasma. The spermatogenic cells are cloudy and 

 may show disintegration. The spermatozoa are more or 

 less disintegrated and inactive. 



Symptoms. Enlarged, sensitive testicles are the 

 chief symptoms by means of which orchitis or epididy- 



