5o6 Veterinary Obstetrics 



readily use corrosive sublimate solution in the vagina of the cow^ 

 because it produces too great irritation of the mucous membrane 

 and causes severe straining. In the mare, as related on page 492, 

 we can introduce into the vagina a warm corrosive sublimate solu- 

 tion of the strength of 1-2000 or 2500 without causing severe 

 irritation, but the cow does not endure it so well. 



Brauer recommends very highly the use of subcutaneous injec- 

 tions of a 2 % solution of carbolic acid, 20 or 30 cm', to be given 

 every two weeks during the period of danger. Combined with 

 these, he recommends the same regulations in reference to 

 disinfection which we have already related. 



The bull should also have strict attention, as a probable bearer 

 of the infection. It is highly inadvisable to allow a bull which 

 is in use in a given herd to serve cows from other herds where 

 abortion exists, and it is equally imprudent to permit a cow from 

 an apparently healthy herd to be sent to a bull which has been 

 used among infected cows. 



When there is a suspicion of danger from the bull, and. 

 it is desired to use him, the prepuce and penis should be carefully 

 disinfected before and after copulation. 



The disinfection of the prepuce of the bull is best accomplished 

 by means of a piece of pure gum tubing, % to yk in. in diameter 

 and 4 to 6 feet in length, provided at its distal end with a funnel, 

 into which the disinfecting fluid may be poured and thence flow 

 by gravity through the tube into the prepuce. The force of the 

 liquid may be moderated by the ' height at which the funnel is 

 held. The most convenient form of rubber tubing procurable is 

 the ordinary pure gum horse catheter. 



The distal end of the rubber tube is inserted into the preputial 

 opening and held in place during the operation. The orifice of 

 the prepuce about the tube should be grasped and closed while 

 the fluid is entering, causing a large volume of the disinfectant 

 to enter the sheath and fill the entire cavity. Such distension of 

 the cavity obliterates the mucous folds and enables the disinfec- 

 tant to reach every part of the surface. Any reliable disinfectant 

 may answer the purpose. The sheath will ordinarily withstand 

 a warm i to 2000 corrosive sublimate solution or a 2 to 3 % lysol, 

 creolin or carbolic acid solution. The long hairs about the pre- 

 putial opening should be clipped away so as to render the part 



