130 SWINE DISEASES 



Inflammation of the vagina usually accompanies 

 metritis. The discharge in such cases is usually purulent 

 and the condition is designated leukorrhea. Vaginal 

 douches relieve simple cases of vaginitis, but if the 

 primary disturbance is within the uterus it must be 

 overcome before the vaginitis will yield to treatment. 



VULVA 



Although the location of the vulva predisposes it to 

 injury, such mishaps are not common. 



Occasionally the Bacillus necrophorus infects the 

 vulvar tissue and produces typical necrobacillosis, which 

 may terminate fatally unless properly treated. 



MAMMARY GLANDS 



Although the mammary glands are modified glands of 

 the skin, they are essential to the life of the newborn. 

 Therefore, a discussion of the diseases liable to affect 

 these glands belongs properly with the consideration of 

 the reproduction organs. 



The location of the mammae of swine predisposes 

 them to injury and infection of various kinds, and in 

 addition the mammary gland contains a milk cistern which 

 is also easily infected. But since swine are more resistent 

 to infection than other domestic animals, the mammary 

 disturbances also are less common in swine. 



Mammitis 



Acute inflammation of the mammary gland occurs, 

 but is rare. The usual cause is infection, but this generally 

 means that the gland has been injured and thus predis- 

 posed to infection. 



The affected gland is tumefied, hot, and painful. 

 On sectioning, varying quantities of milk and inflamma- 

 tory exudate escape from the ducts. The blood vessels 

 are gorged with blood, and the milk in the larger ducts 

 and cistern contains clots. 



The affected sow refuses to allow her pigs to nurse. 

 She will change position as frequently as they attempt 



