CALCULATING ECONOMICAL BALANCED RATIONS. 5 
The excess or deficiency in protein of each feeding stuff in the above 
example is found first for one pound, in Table I or II, in the column 
headed “Ratio 1 to 6.” The figures given in the table are then 
multiplied by the number of pounds of the respective feeding stuffs 
in the ration. Thus, in a ration with a 1:6 ratio, a pound of corn 
silage is deficient in protein to the extent of 0.0167 pound. (See 
Table II, column headed “ Ratio 1 to 6,” line beginning “Corn silage, 
well matured.’”’) There being 30 pounds of silage, the total protein 
deficiency in silage is 0.0167 X30=0.5010 pound. Subtracting the 
excess protein in 10 pounds of alfalfa (0.376 pound), the net deficit 
of protein is found to be 0.3026 pound. Dividing this by the excess 
protein in one pound of cottonseed meal, which is 0.3013 pound, we 
find that it takes almost 1 pound of the latter to balance the ration 
toa lto6ratio. After adding this pound of cottonseed meal, the 
balanced ration stands as follows: 
Protein. 
Excess. | Deficiency. 
RMA SHOWN AD Cheer acc. nts 25.) ee viol we eee ole ee Shee siecle Stelinemms cece = 0. 5010 
2 [OC NHTONG ISS LER TON Aa oe Ry A eo EE ee are eae (BSCE Se eee scsosc 
© SU UEGS Gtirinsnneny | 5 ahs 00 eae eI ae a een eee mea Sea ee Sets ee eames .1776 
© PUTRGL OOUE ONES S7a(0 kre eye LS Sa Mi ee eee ee As 10) BS yA ese 
6773 6786 
Sometimes it may be desirable to balance a ration, not simply by 
adding a protein feeding stuff, but by substituting it for one less rich 
in protein. Suppose, for instance, that we desire to substitute 
enough cottonseed meal for corn meal in the above ration to make the 
nutritive ratio 1 to6. In this case the ration is worked out as follows: 
Protein. 
Excess. | Deficiency. 
ST PET ETINGLS GOEL STIEK OS a es a tae Sl a ees SIG Gere eS cr | ay 0. 5010 
Ted) TB OVEITE.G ES By RNR LOR cS a Rat I eI ma et ec A RA Naor ee on NO: 3760 | Sas Naa 
Bemnastconmiemical ys ser oer tn a Oe te ek cos 1776 
3760 . 6786 
Sesser eee - 3760 
INC ERULC COL Cy RaNe er eae ei are tais PMU Crewe oy Srey cota thee ea Siesta ss res . 3026 
Taking out 1 pound corn meal reduces deficiency...........---------------- 0. 0592 
Adding 1 pound cottonseed meal reduces deficiency.-.-.-.-.------.--------- . 3013 
fiotal reduction. per pound. substititeds 2.3225 25. seeds. LS. . 3605 
Pounds to be substituted, 0. 30260. 3605=—0.84. 
Corn meal remaining after substitution, 3.00—0.84=2.16. 
