86 NON-SPECIFIC OR GENERAL DISEASES 



cent warm water solution of liquor cresolis compound. This 

 treatment should be repeated daily and continued for as long 

 a time as necessary. 



Mammitis. — Inflammation of the mammary gland or udder 

 is more common in the cow than in any of the other domestic 

 animals. In all animals it is most frequently met with during 

 the first few weeks after birth. 



A predisposing cause in the deyelopment of mammitis is a 

 high deyelopment of the mammary glands. The following 

 direct causes may 1)e mentioned : incomplete milking, or milk- 

 ing at irregular interyals ; injury to the udder by stepping on the 

 teat; blows from the horns and pressure caused by lying on a 

 rough, uneyen surface ; chilling of the udder by draughts and 

 lying on frozen ground ; and infection of the glandular tissue 

 by irritating germs. The latter cause produces the most serious, 

 and, sometimes, a yery extensiye inflammation. This form of 

 inflammation may spread from one cow to another, causing the 

 milk to be unfit for food, and bringing about the loss of one or 

 more quarters of the udder. 



The symptoms occurring in the different forms of mammitis 

 differ. The inflammation may inyolye one or more of the glands, 

 and may affect either the glandular or the connectiye tissue. 

 In some cases the gland may appear congested for a few days 

 before the inflammatory changes occur. The part becomes hot, 

 swollen, tender and reddened. It may feel doughy or hard. If 

 the connectiye tissue is inyolyed (interstitial form), there is apt 

 to be a high body temperature, the udder may be much larger 

 than normal, is tender and pits on pressure. Loss of appetite 

 usually accompanies tliis form of mammitis. Very little or no 

 milk is secreted. Sometimes, the milk is greatly changed in 

 appearance, is foul smelling and contains pus. In congestion of 

 the udder and ruj)ture of the capillary vessels, the milk may 

 contain blood. 



Mild inflammation of the udder responds readily to treat- 



