74 SHEEP DISEASES. 



fed bucks or wethers, for, as stated elsewhere, 

 urinary calculi are apt to be formed, which, owing 

 to the small caliber of the urethra one-sixteenth 

 of an inch leads to death. 



On the western range about one buck to thirty- 

 five ewes is the usual number. 



After the mating season the male should be 

 given sufficient food to keep him in fair condition, 

 but not fat. Exercise is the most essential thing 

 in sheep hygiene. They are naturally roving ani- 

 mals, and the main cause of impotent bucks is 

 traceable to lack of exercise which leads to vicious 

 habits and excessive fat. 



