186 



Animal Castration 



period of "heat." Pregnancy is a counter-indication to success- 

 ful spaying. 



Restraint — Proper restraint technique is as much an essential 

 in spaying operation of sows as it is in most any operation in 

 animal surgery. This operation calls for the simple and easily 

 applied rather than the complicated and intrinsic methods often- 

 times employed in other operations. The method of restraint used 

 must of course depend upon whether the flank or the belly opera- 



Fig. 165 — Restraint for Spaying (Belly Method.) 



tion is to be performed. If the abdominal cavity is to be invaded 

 from below (belly) the most simple and satisfactory method of 

 restraint would consist in looping a strong cord (window sash 

 cord) or small size rope above the hocks, by which the animal can 

 be readily suspended to a post or wall in the hanging posture 

 (Fig. 165.) 



If the flank incision is to be resorted to then it is necessary 



