
PROTEIN REQUIRED FOR DAIRY COWS. 155 
TABLE 70. 
Valuation of Feeding Stuffs as Used in Rations. 








Uw 
“ ae vate 
fai Pe eee veaee 
NAME OF FEED. 22 vg 23 _ Se 
Sou) po ie Boca 
Z te S389 
gee cone met 
Fone. a =z = = = = oe ie 
Gluten feed, - rn 3 : s : 14. $26 00 $5 10 
Wheat middlings, - - - 2 ty 25 50 4 70 
Wement brat, -- + - 3 : = 16 22 50 6 18 
Cotton seed meal,* - : 2 : 4 25 29 04 I2 00 
Cream gluten,* : = a . 3 32 00 8 00 
Malt sprouts, - - ~ - - - 3 Ig 00 O-72 
Or. luinseed, s : 2 Z : 9 Bon?) 9 50 
Hominy meal, - 2 : : & 24 24 28 Sars 
Rye meal, - - a - “ : 9 25 00 3 30 
Wheat feed, - é - : 2 : 18 23 50 5 90 
Rrovender,* — - - : : = : 3 27 00 B430 
tae ©» dairy feed, - - - 2 : : 2 29 50 5 30 
Chicago gluten meal,*_ - : 4 — 28 00 8 00 
Corn and cob meal, - = : 5 — I5 00 2 60 
Corn meal, = a = - : — 26583 Boar 
Oat feed , - - - : = : — 20 00 2 15 
Ground oats, - ~ : : : 4 — 30 OO 3 85 
Mixed hay, -- - < : é = — 16 00 300 
Clover hay, ) 
Rowen hay, § y 5 f j i i uate igen 
Medium quality mixed hay, q 
Hungarian hay, Pe : _ — 12700 3 00 
Oat and pea hay, \ 
Bog hay, 
Black grass, + - - - - . - Seen ott 8 00 2 00 
Oat straw, | 
Corn fodder, - a 2 : ‘ — IO OO 2530 
Corn stover, - 2 a : : : ~~ 6 00 Dash) 
- Silage, - - - - = - : oy 3 00 65 
Potatoes, 2 - - - - - te 4 00 75 


_ *It is well understood that prices of feed do not correspond with their feeding value. 
For example, cotton seed meal contains five times as much protein and practically the 
same amount of total nutrients as provender, and yet there is only two dollars differ- 
ence in the selling price perton. Based on composition, cream gluten should not be 
more valuable than Chicago gluten meal. 
The cows in the two groups averaged 811 and 813 pounds of 
live weight, and the average period of lactation was 5.3 months 
in each group. 
For convenience of comparison the averages of the food con- 
sumed and production of the two groups are placed in Table 73. 
It may be assumed, perhaps, that the large number of cows 
included in these groups have, by counterbalance, eliminated 
differences in individuality. There are, however, four other 
variable factors in the comparison: 
