Urolithiasis in small ruminants. II. Cysto-urethrography as a new aid in diagnosis.

A technique for catheterizing male small ruminants is described. The barrier formed by the presence of the urethral diverticulum is avoided by the use of a pre-curved catheter. The technique enables application of contrast studies of bladder and urethra in animals suspected of urolithiasis. Differentiation between cystitis and obstructive urolithiasis is possible and the indications for urethrostomy can be reduced.