
PROTEIN REQUIRED FOR DAIRY COWS. 161 
TABLE 75. 
ORIGINAL RATIONS. 
Average Pounds of Grain and Roughage Fed per Cow per Day, 
with Protein Content and Fuel Value, also Average 
Daily Milk flow and Yield of Butter. 










g 3 : EU aera ace at Seal 0 53 
| pre} |B | aw ies| S|) 2 184/88) ge 
‘No. oF TEST. [4,| & 5 a ‘Oo apelin a aie ole) 
a oer aie Sd Very aE Ca |. ein CRM ep nero 
ae o Fe egg reg ba: SPNMCEPE ON Poh AUN ance 
rie, a WIM | .20 a re oa yoo ||) ae 
"s HT 4 i ey ae 2 
27, - ee hie 202i. C00).0. 24129764 ON 2 701\1A 2014. te 
31; - PN ONie 32125 A507 AO 25) SAO pao hk WOT. 125.209 250 ap 
‘ise - Bae AF 270) 00.2 158.501 27° 5105.9 Mer SA 18.95) 3.0) i 
60, = Pat aie 7 1207400! O.On18 75) |o aT 7g OCmNLO 4 Fay Or 
22. - = {12/1 .38/21,150) 7.3 |11.9 | — j15.1 | «70 |13.47/ 3.2) — 
39, - SE Rib SG WhO 0501.07 3.0 0.7 130s7 lL pals| 680 120.98h4.5 ). — 
43, . RO earl 25, 4001s Ani IO22 4. 2)22 (1.11) 20. 177298) 423) 
B2. - Or Ale a1 A120.700l' 8.1 14. 2e\—e 7 a7 | O05 118 7314.0 1 
20, - errs 40125,S00) 9.1 118.40) 7 tSut | 80.107. 26) 4 04) 
35, - Pty A 2120,,000) 7-3 °)1757 |= L607 Mee O4 Psp O2r4 CO eas 
44, - eS 21230 1TS0\L 195 15.02|)—) 122, B71 220" 121572) 4.2) —— 
40, - eee O) 1.70/30, 600) 6.5. 11010 |20.4/10.97|1.02 117.45) 4.4 |) — 
56, - PSO ieds 127.200) 4.0) 122-0) \. 14355 p78 19 .80)4..3) a 
ao - Peat. 03130, 650/10.9 |I5.2, | "17.9. | 08 |19-94) 4.2) —— 
59, - Bair 75127, 00013 20./17.8.| =-\T4. 1 p288 119.00) 4-4) 
18, - me Peetsi3o750\10.1 110.0" 1010/1828 (1.10) (20.07)5..7 | = 
36, = RAI 2 34198, S50) 9.4117 oI) |) 220)17.0 4 1.02.120.900/ 4.5). => 
ar, - #17312. 71)31,990\11.7: | 7-7 |29.9}16.6 11,00 |25.44)5.5 |) — 
52, - - | 8/2.23/28,800) 3.8 |23.5 | — |13.9 | .88 |19.86/4.9| — 
63, - Pure" to95,, 140\11,6 120.4 |. \19.4 |1.04.122204).547 | 
64, ee 12012 0A0130,000) 8-2. (11,3 |22.5119.0 | 1.03. |23.13) 5.0) 
BN Or eg BeTd®, 277 11 85|28 240) 8.49|14.77| 9-4|17.25| -954|19.43] 4-4 [15.03 









The twenty-one herds, containing 277 cows, four weeks later 
in lactation, gave daily, per cow, 0.25 pound more milk and .056 
pound more butter with the recommended ration than with the 
original. The food cost of the recommended ration was 0.23 
cent less, and the net cost was 0.73 cent less per cow per day. 
The recommended ration contained 0.51 pound more protein, 
1,070 less calories, 0.66 pound more grain and less roughage 
than the original. 
In comparing the original with the recommended ration it 
should be noticed that there are five variable factors: 
1. ‘The calories are less in the recommended than in the 
original ration. 
