174 



Animal Castration 



Fig. 151— Miles' Palm Needle. 



Fig. 152 — Mooy's Needle. 



Anatomy — The anatomy of internal and external genital organs 

 are same as cow. (See page 166.) The flank region possesses a 

 well defined triangle, through the center of which the abdominal 

 incision is made. The tissues penetrated by this incision are as 

 follows : Skin, subcutaneous connective tissue, fascia, external 

 and internal oblique abdominal muscles and peritoneum. 



Sterilization, of Instruments and Cleansing Hands of Operator 

 — Same as for cow spaying. (See page 167.) If the operator is 

 right-handed, it is best to invade the left flank. If left-handed, 

 the right flank should be invaded. 



Operative Technique — 1. Clip hair from site of operation. 



2. Wash parts with soap and warm water, using scrub brush. 

 Special care should be taken to remove all loose hair from the field, 

 and sponge off with antiseptic solution. As a further precaution 

 against septic infection it is well to paint skin with tincture iodine. 

 Iodine. 



3. With knife in right hand, beginning 2 inches below trans- 

 verse process of lumbar vertebrae, a slightly diagonal incision 

 3H inches long should be made through the skin only. The exact 

 site of this incision is through middle of triangle between the ex- 

 ternal angle of the illium and posterior border of the last rib. 

 (See L, Figs. 153 and F, 154.) 



