166 STORRS AGRICULTURAL EXPERIMENT STATION. 
There is, then, more net available energy in a pound of di- 
gestible nutrients in grain than in roughage. Of two rations 
otherwise equal, the one having the more grain should prove 
more effective. 
TABLE 79. 
Liffect of Grain on Milk Flow. 























A. Grain increased more than 1 pound and from below 8. 
_ B, Remainder in which grain was increased. 
C. Grain decreased. 
: [| d v ; H as 
BE) 2 |g | 2 | 88) 28 ae See 
= a Be g H 
No. or Test. | : 5 3 3s pace i Dae ae 
Cea ats ‘c Ohya Tne co sat eae 3 Pe rt 
° i oO rm) ao oA a 4 fe) is 
Z a a 4 aa aE ae: Fa gro 
a 4 a's 
A, . 
Ones ~ |; 80}°1,69}.28 160) -6.2.1-14.7) ‘18. 4116,07|) sOO4 MiG meee 
Bsa - |, 80) 2.29) 27,595| 8:2 |. 13.6)" 9. 17.13 \91 Of SST On scenes 
Difference, +.60) —565;)+2.0 |—I.1|/—9.3|+1-06|+.106] +.92'+.7 
B. 
Ore oke - |105| 1.92) 26,985] 9.1.| 13.9] 5.5|17.24|). .968) 19.27\24es 
Ren 75ae - |105} 2.42} 26,540) 9.97) 12.2| 5.3|17.44] 1.020] 19.31] 5.0 
Difference, +.50| —445) +.87|—1.7| —.2|+.20|/+ .052) +.04/+.7 
o . 
6 Ps - 1°92} 2.95] 29,575) 10.1 | 15.7) <4.3|18.451" 2000) core amen 
Roy = | 92] 2.37) 27,380) 9.25] 14.1] 4.5|17 705) 17000) dieuuaeaee 
Difference, + .42/—2,195| —.85/—1.6) +.2/—.50/+ .o10/—1.63/+ .3 






Table 79, upper division.— With seven herds of eighty cows, 
the grain in the recommended ration is increased 2 pounds, 
and the milk flow is larger by-1.06 pounds. : 
Middle division.—With seven herds of one hundred and five 
cows, the grain ration is increased by 0.87 pound, and the milk 
flow iso.2 pound larger. 
Lower division.—With seven herds of ninty-two cows, the 
grain ration is 0.85 pound less than in the original ration, and 
the milk flow is 0.5 pound smaller. 
The amount of protein eaten is increased in all three cases. 

