230 WINTER FEEDING OF DAIRY COWS 



Table I. Feed of Maintenance 



Ration for Milk Production (The Haecker Feeding Stand- 

 ard). — For many years the only available standard or guide 

 in feeding for milk production was that of Wolf, later modified 

 by Lehrnann, which standard took into account only roughly 

 the amount of milk yielded per day and no account at all of the 

 quality of the milk. 



The following table from Minnesota Station Bulletin 130 

 shows that as milk increases in fat percentage it also increases 

 in protein and sugar. 



The comparative value or cost of milks of various fat per- 

 centage is best shown by reducing all the nutrients to a single 

 term called the Starch Equivalent. This is obtained by mul- 

 tiplying the amount of fat by 2.25 and adding to the product the 

 amount of Protein and Carbohydrates. 



The following table makes this matter clearer. A glance at 

 the table convinces one that to feed amply and yet not waste, full 

 account needs be taken of the quality as well as the quantity of 

 the milk being produced by the cow being fed. 



