» 
40 ; _* [ASSEMBLY 
For four days of each period, (except period III, one day) : 
Periods. 
Daily in lbs. —_———_ TF 
I II If. IV Vv 
Average weight per cow........... 728 747 725 718 715 
Average weight of food consumed.. 984.65 78.00 25.37 26.37 61.43 
Average weight of water drunk .... 48.30 3.82 50.25 62.62 32.60 
Average weight of dung............ 39.74 33.83 29.81 45.49 42.48 
Average weight of urine........... 11.37 13.27 11.00 8.70 20.87 
Average weight of mil. ........... 17.41 19.55 20.22 17.87 15.95 
Average weight consumed : 
DP CI MAUR. «5 05 «wd cowtcele wars 18.70 17,22 20.17 19.00 17.31 
PaeVALOT; Sb cus hoes ice owe ee ees 63.95 60.78 56.75 65.02 72.01 
Average weight passed ; 
Per CU OP Nine Utd 4 los oe cen 6.35 5.18 5.98 9.17 7.70 
of water in dung and urine........ 44.77 41.93 34.83 45.01 59.65 
Average weight yielded : . 
GLY Y ALR oe so rg ss oecr oe We ae 2.60 2.76 2.98 2.57 2.32 
of waterin- milk woo... wee ees 24.81 17.29 17.24 15.30 13.63 
Total dry matter: 
COUSUIIAQ 85s Los cieps cheesy Unies 18.70 17.22 20.17 19.00 17.31 
collected in dung and milk........ 8.95 7.94 8.96 11.74 10.02 
Total water : 
POMBUUTEKs 4 nts wan aca eee tbe 63.95 60.78 56.75 65.02 72.01 
collected in excrement and milk.. 59.58 59.22 52.07 60.31 69.28 
Total dry matter retained, lbs ...... 9.75 9.28 11.21 7.26 6.29 
Total water retained,lbs........... 4.37 1.56 4.68. 4.71 2.78 
When we have the weights of the food fed, and of the dung ex- 
creted, we can analyize both in the same way, and thus determine 
the quantity of each nutrient which enters and leaves the body, the 
difterence between the total amount of the dry matters in fodders 
and dungs giving very approximately the amount that has been 
digested. Let us then observe whether this process will give us in- 
dications of the feeding values of our rations, leaving to another 
place the consideration of the component parts. 


Periods. 
f tif 28h cies Eee Ti se CL Ph 
ie 1 fe Tif. IV. We 
Dry matter consumed, lbs .......... 18.70 17.22 20.17: 19.00 VES1*. 
Dry dung collected, lbs.............. 6.35 5.18 5.98 917 7.70 
Difference, or digested, lbs.......... 12.35 12.04 14.19 9.83 9.61 
ParacuD. isa ces ot es cece ay al Mater Toate 66. 70. 70. 52. 55. 
Before passing to the consideration of the digestion of the com- 
ponent parts of the foods, it may be desirable to eall attention to the 
reliability of some of our methods. Excluding period III from 
our consideration, as of being continued for too short a period to 
secure proper results, we may call attention to the uniformity or lack 
of it which exists between the averages of two adjoining periods 
within each trial, as it will thus appear whether the preceding food 
has been eliminated from the intestines of the animal. 
