COST OF PRODUCING HOGS IN IOWA AND ILLINOIS iis 
COST OF FATTENING PIGS FOR MARKET 
There are three major and two minor classes of pigs when grouped 
according to time they are farrowed. Early spring, late spring, and 
fall pigs are much the larger classes; summer and winter pigs are 
sometimes interspersed among these classes. Figure 7 shows the 
DOLLARS 
Trend of Ave Monthly 
9.5 — Prices at Chicago 
8.5 
8.0 
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I «90 oe 
FEB. MAR APR. MAY JUNE JULY AUG. SEPT OCT NOV DEC, JAN FEB. MAR APR MAY JUNE JULY AUG.SEPT. 
HB vortrhs of Farrowing ERE vonths of Marketing 
Fic. 7.—This figure shows the months when pigs are farrowed and periods during which the major 
portion of each classis marketed. Usually the early months of marketing for each kind of pigs 
farrowed are the most profitable, unless the ratio of hog prices to corn prices in any one year 
increases in favor of hogs as they are fed past the early market 
relation of the time of farrowing of each of these classes and their re- 
spective usual months of marketing. With the months of market- 
ing is shown the trend of monthly hog prices at Chicago for the 17 
years, 1904 to 1920. This figure shows the effect upon price of the 
marketings of the various classes of pigs. 
TaBLeE 11.—Variation in the percentage of sows farrowing and the principal reasons 
why other sows did not farrow 
1921 1922 
Variation in per- Percentage not far- Percentage not far- 
centage of sows Average rowing Average rowing 
that farrowed | Number | percent- Number | percent- 
of farms | age far- of farms | age far- 
rowing | Bar- . rowing | Bar-| , F 
fon Aborted | Died eon Aborted | Died 
—e__ oo: ee ee | Se ee” oF 2 eee. La oo 
40 to 50._-------- 1 Ra sr sets PB eaemtoy ies Ss Bee oes FS eee eee? 
Si! ee 1 59 23 14 AY TR Sk SO Sele rene ee Bie Rare oe (Cae Re 
60:£0:70.32: 3-22: 3 63 34 5 RE a 4 66 29 Si. e 
(ts). 6 75 18 5 FT ROR REST) WL a SEN aed ee Le el ares 
S0/ta O0:-= = 16 83 8 | 6 3 10 83 11 5 1 
UN i | pr 92 3 | 3 2 14 94 3 2 1 
li ae 23 TORS Eater te tks! eee 11 1 Se a Be Se 
Average___ 161 yo | a hee 39 88 | 8 3 1 
1 Includes 17 farms on which farrowing records were obtained but on which complete cost records after 
wing were not kept because of too complicated herd management or lack of cooperation from producer. 
