22 BULLETIN 459, U. S. DEPARTMENT OF AGRICULTURE. 
The quantity of energy, of course, corresponds with that estimated 
to be necessary, because the amounts of feed were fixed upon on that 
basis. We observe, however, that the amount of digestible protein 
in the ration is less than is estimated on page 16 to be needed by 
beef cattle of this age. A ration like the above might produce fair 
gains, but it probably would fail to take full advantage of the ca- 
pacity of such cattle for growth and the gain would most likely fall 
below that which was anticipated. An increase in the protein could 
be expected to make the ration more efficient. 
To make any marked change in the ration in this respect, it is 
evident that we must introduce into it some feed much richer in pro- 
tein than either of those composing it. On consulting the table it is 
evident that what we need is one of the by-product feeds like gluten 
feed or meal, the oil meals, etc., and also that only a small amount of 
one of these will be needed to effect a marked change in the ration. 
Thus, if we substitute 2 pounds of old-process linseed meal for 2 
pounds of the corn-and-cob meal, the ration will foot up as follows: 
Total dry | Digestible | Net energy 
matter. protein. value. 
Kind and amount of feed. 
Gloverdiaynyi DOUNOS sie eaea con seen ised 5 Stas eC e eee eee. 
Corn-and-cop neal ja pOUNGS =. oo cee seas = sae ie oe Stee ee 
Old-process linseed meal, 2 pounds 
Thus at a comparatively small additional expense we are able to 
improve the ration materially by adding the lacking protein, and 
there is little doubt that the improved ration would produce a more 
rapid gain and, under ordinary conditions, a more profitable one as 
well, either by increasing the total gain or shortening the feeding 
period. 
COMPUTING A RATION FROM GIVEN FEEDING STUFFS. 
There are available for a dairy herd field-cured corn forage 
(including the ears), clover hay, corn meal, wheat bran, and gluten 
feed. The table on pages 11-13 shows that these feeding stuffs, if of 
good average quality, will furnish in 100 pounds: 
Feed Total dry | Digestible | Net energy 
; matter. protein. value. 
Pounds. Pounds. Therms. 
ISGTHIOLAR OMe se < e a cont ace - Stas als mea oe ste saws = oe eee Sea ae 81.7 2.3 94 
ILM OTHIAY 8 foe a a ee ite Sale 35 ob oe on 3k eee eee 87.1 4.9 38. 68 
RTA MINICAL Cs 2 Bes ooo oe eae ee Bh has is ors HE ie a sk. ee ae some ee 88. 7 6.4 88. 75 
MMM eeTL RS reat te sees ee ee tah ee a oe Eh no 5 5 ae ae See ee 89.9 10.8 53. 00 
EL IPEP ETS ce 22 ENS I Ss ee nee een ey Ne i Sa 90.9 28.1 84.15 
