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MANUAL OF FARM ANIMALS 



Jack colts should be cared for and weaned much as suggested 

 for horses. Because of the length of jack colts' limbs, they seem 

 to be more liable to spring their fore legs when feeding on pas- 

 ture than the horse colt. They are required to put too much 

 weight on the fore legs to enable them to reach the grass, and 

 there is a giving way in the joints; usually the knee springs in 

 or out, but often the ankle gives way. Again when the dams are 

 low, thus compelling the colt to stoop and suck, the fore limbs 



Fig. 52. — Two Two-year-old Jacks. Owned by C. F. Cook, Lexington, Ky. 



are often cramped in such position as to increase their liability to 

 injury. These difficulties are so serious that Knight gives the 

 following advice : When short grazing is the cause of the trouble, 

 put the colt in the stable and feed with suitable food; when 

 caused by a low dam, the difficulty may be obviated by the colt 

 being put in the stable and fed on modified cow's milk, or milk 

 from the dam. 



Mules and hinnies. — The mule is the product of a jack and 



