ee 
7D 
22 BULLETIN 1381, U. S. DEPARYMENT OF AGRICULTURE 
The increase in corn consumed per 100 pounds for each successive 
50-pound average sales weight group was 63.4 pounds, 22.2 pounds, 
and 25.3 pounds. Some of the fall pigs were sold as feeders and the 
corn consumed by this class averaging only 75 pounds was 396.5 
pounds. The corn consumed by the class averaging 125 pounds was 
403.2 pounds, for the 175-pound class 413.6 pounds, and for the 
225-pound class 395.9 pounds of corn. The decrease in the quantity 
of corn consumed by this heavy class of fall pigs is due to the influ- 
ence in the class of two large especially well fed droves whose aver- 
age was much better than the others and to the quantity of oats and 
skim milk fed to this group. 
TaBLE 15.—Average quantities of feed, pasture, and labor required to grow pigs 
to various weights 
Class of pigs Spring pigs Fall pigs 
100 150 200 250 50 100 150 200 
Weight at which pigs were sold___ _- pounds __ to to to to to to to to 
150 200 250 300 100 150 200 250 
Rane er OL CGTOWeS |... 65 Ae as eee 3 29 37 8 4 5 16 8 
Average weight per head________.___pounds__| 131 184 223 261 84 125 171 226 
Feed consumed per 100 pounds gain from 
weaning: 
[iy aa he 5 Seah Meee tee See pounds__| 294.3 | 357.7 | 379.9 | 405.2 | 396.5 | 403.2 | 413.6 | 395.9 
Oi Stew oe 8 fe SP ee Le ee do__ 2)..2)|- 12:07). TRS 44> 15.7 1 v22. 90) 2068 a 1750 34.0 
TL Mer Pe CINS — x 5 2 2 (443.2. ar eyrees BO Pehle 1.4 aS! 1.2 1.6 4.4 . 4 et 
JULES 2 5 ei ce a SEE aE vf Me dover" a0 9. 2 di el) AS Te eae ka oe 7.8 
€Citber mrotems:<$) 2. 25 biel ee OMe pal a aow See 1.5 4.5 1.9 4.7 2 Silsstiieu 33 
PCr DORE Se Sto ons va heen (ol eS Te ee. 3. 0 5.3 Pi red (ate a 5.3 .4 1.3 
Siem mine? Lhe bk dos. 22h 1964.) 17.84/12. 0 2.7 | 64.4 6.1} 10.6 45.6 
TY LURE (eT | Ae Re Sei ore GOnt cele pextess: 5 my | ney 2 ee 4.7 .3 .3 3.6 
Pasture days per 100 pounds gain___________- 4.1 3.9 3.1 2.5 2.6 .5 12 1.8 
Estimated total feed units_-.__._.____....._._- 354 428 445 465 490 465 472 471 
BASINS CYS Der Dig. 2s os oe See 4.1 5.9 5.8 5.8 1.4 .4 er 3.4 
Labor: Man hours per 100 pounds gain_____- 1422) '|'3 1/08 . 87 .80| 3.18] 1.64] 1.34 1.16 
Horse hours per 100 pounds gain___-__ .37 . 30 . 29 28 -49 - 43 54 . 55 
Pasture was used in approximately equal amounts by the spring 
pigs of different weights. The time of grazing on pasture for the 
three weight classes above 150 pounds was 5.8 animal unit days per 
ig. The pigs in the light-weight class below 150 pounds were sold 
Habre the close of the pasture season and had spent only 4.1 animal 
unit days per pig grazing on pasture. The pasture used by the fall 
pigs was largely used in the spring following their farrow. Many of 
these fall pigs were sold before the pasture season. Greater use was 
made of pasture as the fall pigs were made heavier. When the time 
spent on pasture is seaPeascd per 100 pounds gain, the heavier classes 
of spring pigs show a smaller use than the lighter classes, because of 
a greater gain in dry lot after the pasture season. 
COST ELEMENTS OF PORK PRODUCTION 
Variations in cost of production result from different’ combina- 
tions of cost elements and variations in the price of these cost elements. 
The variations which have been shown to exist in the cost of produc- 
ing pork suggest the possibility of more standardized production 
practices. 
The average feed cost on these farms was 64 per cent of the total 
cost of pork production in 1921 and 75 per cent in 1922. The varia- 
tion in percentage which feed was of total cost is shown in the fre- 
quency distribution, Table 16 for 1921 and 1922. ‘The feed cost per 
