8 ~ BULLETIN 612, U. S. DEPARTMENT OF AGRICULTURE. 
Summary of digestion experiments with mature dasheen in a simple mixed diet. 
| 
| 
: < : F Carbohy- | 
Experiment No. Subject. | Protein. | Fat. apni Ash. 
| | 
Per cent. | Per cent. | Per cent. | Per cent. 
OA Rs ergo s SEAS be Ly See Sh OR Rh a te ioe Se Re TSR AG 79.8 95. 5 97.2 75.4 
Ae MIN ee eee RUS aera SE Stet AY SA any SeeLS ROSY meee ee dave Ug dB Ed 87.4 95.0 |. 99. 4 &3. 7 
£57 Ua eee Ly eRe UAT ER Ge ae DR PSE ING AiR eR IEA NS ody aa i Bera <r aie 88.1 96.9 98. 5 83.7 
ast bag ie eae RI CM ay ba a Caw 73.1 95.7 |=) Fo5'6)| 64.7 
SP ASVETAGG NMS OIA DUNT nae MURR Ace ROME ed eee eee | Boi 95. 8 97.7 | 76.9 
In the experiments with mature dasheens the subjects ate, on an 
average, 41 grams of protein, 129 grams of fat, and 231 grams of 
carbohydrates, of which 82.1 per cent, 95.8 per cent, and 97.7 per 
cent, respectively, were retained in the body. ‘These values, except 
for protein, agree quite closely with those reported for an ordinary 
mixed diet, which are, for protein, 92 per cent; for fat, 95 per 
cent; and for carbohydrates, 97 per cent. Perhaps the low coefficient 
of digestibility of the protein obtained may be due to the fact that 
only 41 grams were taken per man per day; it has long been recog- 
nized that the feces contain nitrogen aside from that derived from 
the diet, and this becomes proportionately larger as the nitrogen 
intake decreases. The coefficient of digestibility obtained for the 
. carbohydrates of the mature dasheen, 97.7 per cent, would indicate 
that they are very well assimilated. 
SUMMARY OF ALL EXPERIMENTS. 
The following table summarizes the results of all the experiments 
reported : 
Summary of all digestion experiments with dashecns in a simple nixed det. 
Experiment No. Subject. | Protein. Fat. Carbone Ash, 
| 
Per cent.| Per cent. | Per cent. | Per cent. 
DUB Sieh Bess Seis ahh 2 Sas tape a ee parent oa INOS IEE oe 68. 5 | 94. 0 96. § 70.1 
BN Fe US iS ed on TR, ACA ale ce aptaey png mena s Sam ies 12 Lk Deke 90. 7 97.9 98. 4 90. 2 
BLO ie Psst I aT 5 55 Ne ale heey ee A MN Bae RDA oy 2 Ten Gye 75.0 95.6 97.5 78.0 
(59 () ee I iy SPER Ieee eee menee Cale tS LiL (iy 02) eee ars AC ie 79.9 97.6 96. 1 77.4 
POY'A esas ay a aie Mars Dusen eRe Speke Or teak Ue Sle oy pa AGN KGa Se 85. 2 96. 4 98.5 82.2 
Gy ye at TEL ea De Salmny Lente eae RAMS ALIA a, <5 ae Tal ek C2aWwirte 80. 0 95.9 97.8 78.7 
FG Papen thes ub ieuilagiig Mya Mice ree cons Seen sl no aE Rea Ge 79.8 95.5 97.2 75. 4 
1 RE eT Rene) MRE Red Ea RAYE py! A Pt Nie Se Sry NS dig dB hs = 87.4 95.0 99. 4 83.7 
Li Es eae ae oe, CR aD ee Es Ge DL a a Uee el eas 88.1 96. 9 98. 5 83. 7 
DA Ga te Ae ee te MILE 9 ane ae Rs CSNvs 73. 1 95. 7 , 95.16 64. 7 
NV OTA SE MARS Sh. SN ox ae Se Nats aN pm Mm CAN 29. ERS aa oye a 80.8 96.1 97.6 78. 4 
The average amount of food consumed per subject per day in all 
experiments was 1,733.4 grams, furnishing 1,313.6 grams of water, 
41.2 grams of protein, 129.4 grams of fat, 230.6 grams of carbohy- 
drates, and 18.6 grams of ash. 
