96 ANIMAL CASTRATION. 



days elapse between the two operations. However, 

 some operators have operated on both sides on the 

 same day. 



CASTEATION BY THE PEEPUBIO REGION. 



In this method, the incision is made on the inferior 

 wall of the abdomen a little in front of the pubis and 

 of the inferior inguinal ring, near the sheath. 



In that region the abdominal wall, from 2 to 5 

 centimeters thick, according to size and condition of 

 the subject, is formed by the skin, dartoic layers with 

 adipose and connective tissues, abdominal tunic, 

 great straight of the abdomen, aponeurosis of the 

 two obliques and transverse muscles, the sub-peri- 

 toneal ajjoneurosis and the peritoneum. 



The animal can be secured as in the other methods. 

 But Guuther says the dorsal position is the best. 

 The prepubic region and the sheath are cleansed and 

 disinfected. The skin is shaved. The animal is 

 chloroformed if he is not placed in dorsal position. 



Ifodus operandi. — Four steps. 



First Step. — Incision of the Superficial and Perfora- 

 tion of the Dee]} Layers of the Abdomincd Wcdl. — An 

 incision, involving the skin, subcutaneous connective 

 tissue, abdominal tunic and superficial layer of the 

 great straight, is made a little forward of the pubis, 

 on the side of the sheath, 5 or 6 centimeters from 

 the median line and 10 centimeters long. Then with 

 the index and medium fingers the deep layers of the 

 muscles, the aponeurosis, the fascia underneath and 

 the peritoneum are perforated. 



