18 



BULLETIN 1069, U. S. DEPARTMENT OE AGRICULTURE. 



of milk a year returned about 50 cents more from a dollar's worth of 

 feed than was returned by the cows that averaged 6,000 pounds of 

 milk a year. 



Figure 10 shows the relation of milk production to feed cost per 

 100 pounds of milk. 



As milk production increased from Groups 1 to 9 the feed cost per 

 100 pounds of milk decreased very rapidly at first and more slowly 



Z.30 



2..BO 



2..IO 



\ 2.00 



^ I.QO 



\ 



I 

 H! 



tJO 

 L60 

 /.SO 

 IAO 

 1.30 





\ >.oo 

 so 

 .so 



1500 3000 4500 6O00 7SOO 9000 10500 /2000 /3SOOO 

 POUNP5 OF M/LK PER COW 

 Fig. 10. — Relation of milk production to feed cost per 100 pounds of milk. 



as production reached a high level. At current prices for feed the 

 feed cost for each group would vary from the figures given, but 

 recent records show that the direction of the curve would not be 

 greatly changed. 



The foregoing evidence, based on cow-testing-association records, 

 shows definitely the greater earning power of high-producing cows 



