I 30 VETERINARY OBSTETRICS. 



application of a rubber ring, carefully fitted, and not 

 too tight. Similar wounds on the udder can be dressed 

 with a.dhesive plaster, collodion or wound gelatine, the 

 hair first having been shaved off. The use of the teat, 

 or milk syphon, assists in procuring healing by primary 

 union. In wounds which have been in existence for some 

 time, treatment must follow general principles. 



Bruises, accompanied by the passage of blood-stained 

 milk, require strict cleanliness to prevent infection ; 



MACKEt .SELLERS. ftC 



Fig. 51. 

 Ring Teat syphon. 



blood and milk removed by catheter or milking tube, 

 and resorption assisted by moist heat. 



Mammitis or Mastitis. 



INFLAMMATION OF THE MAMMARY GLAND OR UDDER. 



According to Mqller (Dollar's translation), the 

 causes of acute inflammation may be divided into 

 mechanical, chemical, thermal, and specific. In cattle, 

 the first takes the form of horn thrusts and similar 

 injuries, treads, etc. Chemical or thermal irritants are 

 much less frequent, although irritant substances may 

 produce acute mastitis. Chills may also be a possible 

 cause. Specific irritants are the most important, and 

 different bacteria have been described as the cause of 

 acute mammitis. 



Infection may occur by three channels : (i) Through 

 slight injuries to the skin. (2) From the mammary- 



