308 
Journal of Agricultural Research 
Vol. VII, No. 7 
The sheep were weighed on the first two and the last two days of the 
digestion period and the average taken to determine gain or loss in body 
weight (Table VII). 
Table VII. — Gain or loss in weight (pounds) hy sheep fed vegetable-ivory mealy gluten 
feed , and hay 
Sheep No. 
Weight at 
beginning. 
Weight at 
end. 
Gain. 
Eoss. 
r. 
I 39 - 25 
160. 13 
I 37-25 
163. 83 
2. 00 
6. 
3 - 70 
--,- 
As a supplementary check on the metabolism of the sheep, the urine 
was collected, weighed, and sampled daily, and the nitrogen determined. 
A study of Table VIII shows that sheep 5 excreted more nitrogen than 
was supplied in its food. This sheep lost in weight. Sheep 6, however, 
gained in. body weight, and it will be noted that less nitrogen was given 
off than was consumed. 
Table VIII .—Nitrogen balance of sheep fed vegetable-ivory meal , gluten feed, and hay 
[Estimated in grams of protein.] 
Sheep No. 
Consumed, 
Excreted. 
Gain. 
Loss. 
e. 
647. 92 
647. 92 
659.07 
606. 69 
11. 15 
6. 
41. 23 
By applying the analyses in Table IV to the total rations fed, the total 
amounts of dry matter and food constituents are obtained. From these 
the amounts of the several constituents of the manure (calculated by the 
use of Table VI) are subtracted. The remainder is the quantity of hay, 
gluten, and vegetable-ivory meal digested. By subtracting from this 
the amount of hay and gluten digested 1 the amount and percentage of 
the vegetable ivory digested is obtained (Table IX). 
Obtained by applying the digestion coefficients of hay and gluten alone to the quantity fed. 
