DISPOSAL OF IRRIGATED CROPS THROUGH THE USE OF HOGS. 19 
Table VII. — Results obtained by feeding sows and their Utters on alfalfa pas- 
ture, supplemented with a 2 per cent ration of grain, at the Scottsbluff 
Experiment Farm in 191k and 1915. 
Items of comparison. 
Number of sows and litters . . . : 
Average number of pigs per litter 
Average initial weight of pigs pounds. . 
Average final weight of pigs do 
Total gain per acre do 
Average daily gain for lot do 
Total grain fed do 
Grain per pound of gain do 
Gain per 100 pounds of grain do 
Financial statement: 
Net returns per acre of pasture 
Daily net returns per acre of pasture 
Cost per 100 pounds of gain (pasture at $7 per acre) . 
Equivalent paid for hay, per ton 
1914, 
2 per cent 
corn, 
7 
11.71 
45.4 
1,492 
24.9 
4,704 
3.15 
31.7 
$54. 11 
.90 
3.83 
19.02 
1915 
Lot 6, 
2 per cent 
barley. 
8.5 
3.41 
29.6 
1,672 
27.9 
3,928 
2.35 
42.5 
$77. 76 
1.30 
2.76 
37.74 
Lot 7, 
2 per cent 
corn. 
7.5 
5.53 
38.2 
1,592 
26.5 
4,392 
2.76 
36.2 
Lot 8, 
2 per cent 
corn 
7.5 
7.90 
36.1 
1,540 
25.7 
3,536 
2.28 
43.8 
$65. 52 
1.09 
3.32 
31.80 
$69. 97 
1.17 
2.91 
33.96 
1914 and 
1915, 
average 
of 4 lots. 
7.62 
6.95 
37.0 
1,574 
26.2 
4,140 
2.62 
38.2 
$66. 84 
1.11 
3.21 
30.63 
If the sows and pigs are charged $7 per acre for 60 days' use of 
alfalfa pasture, $1.07 per hundredweight for corn, and $1 per hun- 
dredweight for barley, each 100 pounds of gain cost an average of 
$3.21. The gains on the 1914 lot cost $3.83 per hundredweight, while 
the gains on lot 6 (barley) in 1915 cost only $2.76. 
The average yield of similar plats of alfalfa during these pasturing 
periods was 2.85 tons in 1914 and 2.06 tons in 1915. If it is assumed 
that the pastured plats would have yielded the same, the four lots 
paid an average of $30.63 a ton for alfalfa hay and the hogs did the 
harvesting themselves. Moreover, by pasturing the alfalfa it may 
be assumed that the fertility of the soil was somewhat increased. 
HOGGING CORN. 
The experiments which have been conducted with different methods 
of hogging corn fall into two classes: (1) Those in which no supple- 
ment was fed with the corn and (2) those in which the hogs were pro- 
vided with some nitrogenous feed while they were in the cornfield. 
Experiments in which no supplements were used have been conducted 
for four years and the others for two years. 
CORN WITHOUT SUPPLEMENTARY FEED. 
Each year in the irrigated crgp-rotation field, a quarter-acre plat 
of corn in a 6-year rotation is fenced and the hogs are turned into 
it to harvest the crop. This experiment began in 1912 and has been 
continued each year. The hogs are turned into the corn when it is 
well " dented," usually about September 10. As no supplementary 
feed is supplied and as the weeds and volunteer alfalfa are kept down, 
the gains secured are made from corn alone. Each year since 1912 
