NEW FEEDING FOR MILCH COWS 165 



It will be noticed that in the table, starting with a 



2 gals, per day cow as standard, an additional -J lb. of 

 digestible protein is allowed and the starch equivalent 

 of the ration is increased by i| lbs. daily for every 

 additional ^ gal. of milk yielded. 



As an example of the use to which the table given 

 can be put and to demonstrate the comparative 

 principle, previously referred to, on which rations may 

 be compounded, a winter dairy cow yielding from 2 J to 



3 gals, of milk per day would be considered to be well 

 fed on a daily dietary of i| st. of meadow hay, 4 st. of 

 swedes, 3 lbs. of decorticated cotton cake, and 3 lbs. of 

 maize meal. We can set out the digestible protein and 

 gtarch equivalent of this ration in the following manner : 



Total . . . 2*21 15-08 



This ration, according to the table, whilst having 

 a correct starch equivalent even for a 3-gaI. cow, is 

 deficient to the extent of approximately fib. of 

 digestible protein per day for such an animal ; whereas 

 the following continuous-cropping ration has practically 

 the same starch equivalent and contains over 3 lbs. 

 of digestible protein. 



Total . , . 3.05 15-12 



