\92 ILLINOIS STATE DAIRYMEN'S ASSOCIATION. 



Cows of High Production Capacity Liable to Be Underfed. 



Full Ration. 



Ration of Maintenance. Used for Milk Production. 



Ration of Maintenance Used for Milk Production: 

 Three-Quarters Ration. 



Ration of Maintenance. 



Available for Milk 

 Production. 



d e f 



Ration of Maintenance. Available for Milk Production: 



Half Ration. 

 Ration of Maintenance. 



this animal is reduced one-fourth. The ration of maintenance 

 remains practically the same as in the first case. The amount 

 represented by the line d to e is the amount required to maintain 

 the animal's body, which is the same as in the first case. How- 

 ever, the cut of one- fourth in the ration will be seen to come en- 

 tirely on that available for milk production and reduces that 

 amount one-half. 



Suppose the ration of such cow be still further reduced to 

 one-half of the full ration,or that required for maintenance alone, 

 as represented by the third line. In this case the cutting down 

 of the ration one-half would remove all available feed for milk 



