50 



Animal Casteation 



Fig. 35 — Curved Scissors (6-incli). 



Freparation — Empty the intestinal tract by withholding food 

 for twenty-four to thirty hours. If constipated, oil in sufficient 

 amount to purge several days before operating. 



Sterilization of Iiistni incuts oiid Clcaiisiuf) Opo'ator's Jfands — 

 See iDage 24. 



Operative Teclniiqae — Cleanse and disinfect field of operation 

 by washing with Lysol or Cresol Compound U. S. P. in the strength 

 of one tablespoonful to each quart of water. With Miles' hook 

 knife cautiously make incision into scrotum, ])eing careful not to 

 open the tunica vaginalis. The scrotal incision should begin well 

 forward and extend backward for five to six inches parallel to 

 the raphe or "median line'' and one to one and a half inches 

 from it. 



Tlie sac (tunica vaginalis) containing the testicle should now 

 be isolated or detached by blunt dissection and tearing up the 

 inguinal canal to within about two inches of the internal abdom- 

 inal ring. 



Before proceeding further all l)lood vessels of sufficient size 

 should be ligated. The sac (tunica vaginalis) should now be 

 opened and the testicle taken charge of and held with one hand 

 while the loop of intestine (J) is gradually replaced through the 

 internal inguinal ring (P) (See Fig. 36) into the abdominal 

 cavity. The testicle itself is now removed with the emasculator 

 in the usual way. The stump of spermatic cord (K) is now placed 

 into the abdominal cavity and the tunica vaginalis (L) ligated 

 with chromicized catgut (fourteen day) largest size (M) as close 

 to the internal abdominal ring as possible. The loose portion of 

 the tunica vaginalis is now removed by severing below the liga- 



