566 
Journal of Agricultural Research 
Vol. V, No. 13 
While diuresis resulted and more water was lost through the gut, 
as indicated by a softer consistency of the feces, the volume of milk 
secreted was not decreased. This is to be explained by the fact that 
simultaneously with the increased urine flow more than sufficient water 
was consumed to cover the loss. By stimulation of thirst the excessive 
concentration of the body fluids was prevented, and the milk flow was 
not decreased. 
In just what manner the relations between milk flow and urinary 
secretion with alfalfa hay are brought about is not clear. Whatever agent 
may be responsible for the diuresis, its action evidently is different 
from that of urea or sodium chlorid as observed in these studies with the 
goat. 
INFLUENCE OF DIURESIS UPON THE COMPOSITION OF MILK 
It will be noticed in Tables I and VI that with decrease of milk volume 
as caused by diuresis the percentage of total solids is increased. This 
increase is usually completely accounted for by the increase in fat content. 
The nitrogen content is not changed. 
Table VI. —Effect of diuresis on milk solids of goat 2 
PERIOD 1 
Date. 
Water. 
Urine. 
Milk. 
Solids. 
Fat. 
Nitro¬ 
gen per 
5 c. c. 
Remarks. 
C. c. 
C.c. 
C.c. 
Per cf. 
Per ct. 
Mgm. 
g 
*4 
N> 
H 
I, 900 
40 
740 
16.36 
6. 2 
33 *o 
No additions to ration. 
22 . . . 
I, 800 
140 
705 
16. 38 
6.4 
3 2 * 7 
Do. 
23 ... 
850 
350 
550 
18. 67 
8.3 
35.0 
Collection from 20 gm. of urea. 
24... 
1, 700 
560 
675 
16. 09 
7*9 
33 *o 
No additions to ration. 
25... 
57 o 
zoo 
640 
16. 89 
6.9 
33*9 
Do. 
26'. . . 
L 340 
80 
690 
16.11 
6.2 
33 * 0 
Do. 
27 ... 
1,490 
350 
600 
16. 83 
6.9 
33.0 
Collection from 20 gm. of urea. 
>28... 
1,300 
no 
650 
16. 45 
6.8 
3 °* 9 
No additions to ration. 
PERIOD 2 
June 1... 
1, 580 
ii 5 
63s 
IS- II 
5*2 
3 i *9 
No additions to ration. 
2... 
h 830 
140 
620 
15-30 
5*4 
3 °* 3 
Do. 
3 *** 
*>275 
90 
600 
15-34 
5*8 
30. 5 
Do. 
4... 
1,800 
380 
540 
15.91 
6.3 
30.4 
Collection from 20 gm. of urea. 
5 * *• 
h 125 
145 
600 
15 - 58 
5*9 
29* 5 
No additions to ration. 
6... 
1,790 
600 
15. 28 
5*4 
29.4 
Do. 
7... 
1,850 
365 
550 
15.86 
6.4 
29.6 
Collection from 20 to 25 gm. 
of urea. 
8... 
1, 940 
220 
640 
I 5 - 3 I 
6. 0 
27. 5 
No additions to ration. 
9... 
L 530 
130 
645 
15-43 
6. 0 
29. 2 
Do. 
10... 
1)450 
130 
655 
15 - °5 
5*8 
29. 8 
Do. 
11... 
730 
i 95 
620 
14 . II 
5*2 
28.8 
Do. 
