| i J 
D 
. 2 : 

158 STORRS AGRICULTURAL EXPERIMENT STATION. 
TABLE 73. 
COMPARISON OF AVERAGE OF 20 RATIONS HIGH AND LOW IN 
| PROTEIN. | ; 
Average Pounds of Grain and Roughage Fed per Cow per Day, 
wth Protein Content and Fuel Value, also Average 
Daily Milk Flow and Yield of Butter. 





















- ‘ 
sa} : oD) . ri — . 
D ‘oO se Pray | 8 = s omy es 
yess ¢ fF (AD bas (OS 2 eee ee 
OAOP, TEST 4djiuy. pyimee 5 ae Op | ro) a go | ak 
eS oboe ot Saal ee | we) ome aaa 
S| ¢ g.¢42 | 63.) gel 2 eee 
z| 4 att sae Hw | 8 oe 
207A Wap. = 1279) 1 02)027,122| 727 15.5 7.6) 10.0) 87/2 19203 iaame 
20 Bane- - (295| 2.33] 30,010) 9.2/15.46) 10.5] 18.6] 7.03] 22.45] 5.0 
Difference, - +.71/+2,888)+1.5|—.04/+2.9/+2.6/+ .16/+3.42/+.8 



The average group B cow made more milk and butter than 
did the average group A cow, but at an extra cost. These 
practically offset each other, so that the food cost and net cost 
of a quart of milk from cows in group B were slightly higher 
than from cows in group A, while the food cost and net cost of 
a pound of butter were slightly lower. The differences in the 
cost of a unit of product are too small to constitute a formidable 
argument in favor of either ration. 7 

TABLE 74. 
Cost of One Quart of Milk and One Pound of Butter with 
Rations Low and High in Protein. 







Lbs. of |Food Cost! Net Cost:}/Food Cost|Net Cost* 
Protein wis tdt. of 1 qt. of telbs Of" oFrib. as 
Eaten. Milk. Milk. Butter, Butter. 
Group A; 7 - : = : 1.62 2.557¢. | L.993C | s21. 070) BL arese 
Group B,_ - - . - 2.33 2.595c | 2.020c | 21.79c | 16.94c 
Difference, - - - - a .038c |+.027c | —.o8c | —.IIc 

* The term net cost as here used is the difference between the food cost of the ration 
and its manurial value. 
On the other hand, it is to be noted that the increased pro- 
duction of group B, while secured at practically the same food 
cost per unit of product, really represents a lower final cost per 
unit of product when the items of labor, stabling, interest, etc. , 

