DISPOSAL OF IRRIGATED CROPS THROUGH THE USE OF HOGS. 21 
gain on hogs the first week after the hogs are taken off alfalfa pasture 
than the same amount of corn will when fed to hogs that have been 
on corn alone for several weeks. As will be seen from Table VIII, 
these two variable factors were in direct opposition to each other; 
that is, the larger the hogs the shorter the feeding period. As the 
corn crop in 1915 was seriously affected by hail, the results of that 
year are not included in the average shown in Table VIII, but they 
are shown in the last column of the table as a matter of record. 
Table VIII. — Results of hogging corn without supplementary feed at the Scotts- 
Muff Experiment Farm in 1912, 1913, 1914, and 1915. 
Items of comparison. 
1912 
1913 
1914 
3-year 
average. 
1915 
Number of hogs per acre 
Number of days 
Average initial weight pounds. 
Average final weight do. . . 
Total gain per acre do. . . 
Estimated yield of corn bushels. 
Gain per 100 pounds of corn pounds. 
Financial statement: 
Value of gains per acre 
Returns for 100 pounds of corn 
Cost per 100 pounds of gain (corn at $1.07 per 
hundredweight) 
28 
16 
117 
139 
628 
56.1 
20.0 
842.96 
1.38 
5.36 
24 
28 
91 
133 
1,012 
82.6 
21.8 
24 
49 
63 
107 
1,048 
81.9 
22.6 
23 
31 
90 
126 
896 
76.87 
21.5 
$70. 84 
1.53 
4.81 
$73. 36 
1.60 
4.67 
$65. 72 
1.50 
4.95 
12 
19 
75 
92 
212 
26.2 
14.5 
$14.84 
1.00 
A short hogging period is objectionable from an experimental 
standpoint because there are more chances of error. For example, if 
the hogs are gaunt at either the initial or final weighing, 20 hogs on 
a corn plat for 1 week will give a larger error than 2 hogs on the same 
plat for 10 weeks. The mean weight of three consecutive days' weigh- 
ing will not entirely eliminate this error, especially if the hogs are 
left on the corn plat too long and are gaunt at the final weighing. 
Just how much each of these factors influenced the results shown in 
Table VIII is uncertain. There is little doubt that the low returns 
per bushel of corn in 1912 were due to the fact that the large sow 
was in the lot. The low total gains and net returns per acre in 1912, 
however, were due largely to the low yield of corn, it having been 
estimated at 56.1 bushels per acre, as compared with 82.6 and 81.9 
bushels, respectively, for the two succeeding years. In computing 
the cost of 100 pounds of gain, a charge of $1.07 per hundredweight 
was made for the corn. The results show that this method of utiliz- 
ing corn has much to recommend it. 
CORN WITH SUPPLEMENTARY FEED. 
To secure information regarding the value of tankage and of 
alfalfa pasture as supplements to corn when hogged off, an experi- 
ment was conducted in duplicate in 1914 and 1915. Six lots of hogs 
were used each year, as follows: Lots 1 and 2, hogged corn alone; 
lots 3 and 4, hogged corn and had access to an alfalfa field ; and lots 
