10 
BULLETIN 1069, TJ. S. DEPARTMENT OE AGRICULTURE. 
are feeding concentrates intelligently, according to known production. 
That, however, is not at all a general practice outside of the cow-test- 
ing associations. 
RETURNS FOR $1 EXPENDED FOR FEED. 
The figures in Table 4, also taken from the same tabulation as those 
in Table 2, show the relation of butter fat production to returns for $1 
expended for feed, and to feed cost per pound of butterfat. 
50 /OO /SO 200 BSO 300 S50 40O 450 500 
FOU/VP5 OF BUrrEtf&IT PER COW 
Fig. 5. — Relation between butterfat production per cow and the returns from $1 expended 
for feed. 
The returns for $1 expended for feed increased quite regularly, 
and the feed cost per pound of butterfat decreased quite regularly 
