URO-GENITAL SYSTEM 197 



noted breeders, and from three to five per cent of their get were 

 eryptorchids. Chief Perfection II, sired by Chief Tecumseh II, 

 was the sire of Chief Cherokee Perfection, that in turn sired about 

 three per cent of eryptorchids. Cryptorchidism 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 their function was not possible. 

 Injuries 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 com- 

 mon 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 common in swine. ' 



Lesions. — The affected testicles or epididymi are enlarged and 

 hyperemic. The secreting structures have a parboiled appearance. 

 Suppurative orchitis is characterized by the formation of abscesses, 

 or it may assume a diffuse form of suppuration in which pus infil- 

 trates the tubular and intertubular tissiie. 



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 epididymitis is identified. There may 

 be abnormal sexual excitement. 



Treatment. — Unless the animal is very valuable for breeding pur- 

 poses, castration should be resorted to; otherwise, remove the cause 

 and apply hot compresses, or alternating hot and cold compresses, 

 upon the affected glands. Place the patient in comfortable quarters 

 and where there will be no occasion for sexual excitement. 



TUMORS 



Testicular tumors are not common but appear as frequently in 

 swine as in other animals. Both dermoid and dentigerous cysts 



