A STUDY IN THE COST OF PRODUCING MILK. 
31 
Table XV. — Yearly savings in cost of mill: production effected on the four farms by dis- 
placinq low-yielding cows with higher-yielding cows, figured on the basis of data presented 
in Table XIV. 
(a) DISPLACING A COW PRODUCING 3,000 POUNDS OR LESS. 
Basis of classi- 
fication (pro- 
duction of milk 
per cow). 
Average 
Cost per 
produc- 
100 
tion. 
pounds. 
Pounds. 
2,349.0 
$3.57 
3,64S.O 
2.59 
4, 596. 1 
2.29 
5, 450. 
2.10 
6, 445. 
1.86 
7,513.5 
1.79 
9,049.0 
1.70 
Cost of 
2,349 
pounds. 
taring 
yearly in 
'cost per 
cow. 
Performance of cow displaced 
Comparative performance of better cows. 
Pounds. 
3.000 or less. 
3,001 to 4,000 
4, 001 to 5, 000 
5, 001 to 6, 000 
6; 001 to 7; 000 
7, 001 to 8, 000 
Over 8, 000 
$83.90 
60.84 
53.79 
49.33 
43.69 
42.05 
39.93 
S23. 06 
30.11 
34.47 
40.21 
41.85 
43.97 
(6) DISPLACING A COW PRODUCING 3,001 TO 4,000 POUNDS. 
Performance of cow displaced. 
Comparative performance of better cows. 
3,001 to 4.000 
'4, 001 to 5, 000 
5. 001 to 6. 000 
6', 001 to 7. 000 
7, 001 to 8, 000 
Over 8, 000 
3,648.0 
$2.59 
4, 596. 1 
2.29 
5, 450. 
2.10 
6,445.0 
1.86 
7,513.5 
1.79 
9, 049. 
1.70 
Cost of 3,648 
pounds. 
$94.48 
83.54 
76.61 
67.85 
65.30 
62.02 
S10.94 
17.87 
26.63 
29.18 
32.46 
(c) DISPLACING A COW PRODUCING 4,001 TO 5,000 POUNDS. 
Performance of cow displaced. 
Comparative performance of better cows. 
4.001 to 5.000 
5,001 to 6, 000 
6, 001 to 7, 000 
7, 001 to S, 000 
Over S, 000 
4, 596. 1 
$2.29 
5. 450. 
2.10 
6. 445. 
1.86 
7,513.5 
1.79 
9,049.0 
1.70 
Cost of 
4,596.1 
pounds. 
$105. 04 
96.52 
85.49 
82.27 
78.13 
$8. 52 
19.55 
22.77 
26.91 
(d) DISPLACING A COW PRODUCING 5,001 TO 6,000 POUNDS. 
Performance of cow displaced 
Comparative performace of better cows. 
5,001 to 6.000 
5,450.0 
$2. 
10 
6. 001 to 7. 000 
6, 445. 
1 
86 
7, 001 to 8, 000 
7,513.5 
1 
79 
Over 8, 000 
9,049.0 
1 
70 
Cost of 5,450 
pounds. 
$114.42 
101.37 
97.56 
92.65 
$13.05 
16. 86 
21.77 
(e) DISPIACING A COW PRODUCING 6,001 TO 7,000 POUND; 
Performance of cow displaced 
Comparative performance of better cows. 
,001 to 7, 000 
, 001 to 8, 000 
Over 8, 000 
6, 440. 
7,513.5 
9, 049. 
SI. 86 
1:79 
1.70 
Cost of 6.445 
pounds. 
$120. 03 
115. 37 
109. 57 
$4.66 
10.46 
From trie standpoint of economic milk production it would seem 
that the easiest step in the building up of a poor dairy herd is rela- 
tively the most profitable. Certainly the step from the poor cow to 
the cow of medium capacity is the one which promises the largest 
dividends on a modest expenditure of money and effort. In this 
connection the reader should study Table XV, which shows the 
gams resulting from progressively displacing a low-yielding cow with 
