ere. 
aaa 
oe 
PROTEIN REQUIRED FOR DAIRY COWS. E57 
be expected to yield larger amounts of net available energy, 
and might, therefore, be expected to yield larger amounts of 
milk and butter fat. 
The larger number of calories in the rations fed to group B 
may have caused the larger milk flow, but this may be doubted, 
as the number of calories in the rations fed to group A were 
sufficient for cows yielding 16.0 pounds of milk. 
TABLE 72. 
ORIGINAL RATIONS CONTAINING MORE THAN 2.01 POUNDS 
7 PROTEIN. 
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. 






a ob : oO. 
D a dj Ow : nuh uo} on 
§) 2] 2 | = |se/23) e-| 2 | 8s [eo 
No. or TEsT. ee = 5 o) selag| & aie Portas eae tia! 
ath (ees = ae |» é date anos 
3| 3 5 SONG eee, esate Bon caer 
aa a Sars One (a 
fs - Peers 2620-1 30, ¥50-)e 7,5 114724, Ou 1678 11 .02;24 21 |. —— 
ol . pe Oo etd WS S80 TT. 16852 4845) 2072011410126 5 20 are 
Bes = A eek 3 e2eAT 30.350 1 25:6 1042 Oule LO, 3e) b, Ooi 21. OO lta 
A, * = 4 me eee hO 45 I COOne 0.5 124 24 sive 14.019. 02/24 21 uae 
it oe ae Ghee 195 00m 0.0. (T0160) 20-4181. 4004 OO|2T 656) —— 
lip < - SEZ 2037 31,000 i, 0.2121 5 sare ae su 200125 310 a 
Eine: = 4 Pepi o 2234 20, 250i56) 5 TO. 2rd, == Al 5 Oct 00/235 1Opee— 
US te om = ZO 2.OIn 20 S5ONtiT AMO. Se 30-0.)52 1,5 12 00\23 sO 
Pays 5 Pelee 2 40 OG 5 OOnia on DLO -Or) = ILS. 5, | TC O4I24 EO 
i oleae c3 Pee Sears iso. 78OiaTO 110,010.04) L0.0 111012007) ta 
On - : ou W516 2229-)' 27,550.) -8.8/115.6 TOP STs, OS eas Olle ce 
C7 ai 2 Peg) 2.70, 20,100 | 10: 6/115 2:7 — | 17.9 |I.03}20.97| — 
OD one é PRET Ay 20T4 1 26,700 | 2S. Pi 4e 20). — 5 17-72) .O5tbenyel ce 
BO... = - Simi Aie?. 340128, 85010.45 117-2 QOL 7 Ov 021 20..00 tas 
es - Meet E25, A000) Did \TOe 2th qa 222072 20127 085 
Ae os - - Best erjOct SO WEI LO 1520. e 22.6 20217 2a 
ee - Meron Te t,G00 1 LIn7 jo pao 29.9 0rO.0 1 OOl25 eaqyie— 
le ae - - Soe Dee GOO. WS. O1230,5 0 ee eS. Ou Bail On SOw 
63> - b ECS 16055140) 18 120.4) | == 9 1O.4 1 Lh0A122 04) 
645". = pee 93 01.2,4071 30,090 |. 8.2 nr.3 22.5 elQ .O5)1,03\23..13 ho 
Avg. of 20herds, |295] 2.33 | 30,010 | 9.2 [15.46 10.5.) 18)6.\1),.03)22451 50 







The food cost of rations B was 3.42 cents more than A and 
the estimated value of the obtainable manure waso.8 cent more. 
On the basis of 2.15 pounds to the quart, the food cost of a 
quart of milk and a pound of butter from rations A and B are 
as shown in Table 74. 
