4 BULLETIN 610, U. S. DEPARTMENT OF AGRICULTURE. 
Summary of results during growing period, Jan. 19, 1915, to May 11, 1915 
(112 days). 
Lot 1. Ration: 4 parts corn meal, 4 parts middlings, 1 part tankage: 
Duration, of experiment... — £24 - i ee eee days__ 112 
Pigs U0 oe 6 eae a Se See ee eee number-__ 8 
Average first weight} 2222-222) =e See See ae pounds__ 51.37 
Average fina] weight. 22 55 ==. So ee eee ee eee eee O22 £3 1 Oi 50 
Average gain per pig ------------_ pe ees a ae oP Lt 02227 140s 
Daily SAd ner Db acces ti hk Pe ca 3 en ct in a a dom 1. 25: 
Totals erain, fedis-=—-. coe a Nae do____ 4, 060. 5 
Average erain eaten per ple Gaily 2-2 = ae eee Goeu 4. 53: 
Gram per. 100° pounds gain 2222s eee eee 0 (ne 362 
Lot 2. Ration: 4 parts corn meal, 4 parts middlings, 1 part fish meal: 
Duration’ of experiments x. luis oye Ghie pps eee b ripe days_-_ 112 
Pigs toe seed 2s 8 Se ae ee ee ee number__ 4 
Average first) weight... 3-52 se ee eg pounds... 54.25 
Averace final weizht= 22. Se Soe ee ee eee dos = 2201S 50. 
AVeracé.- Fain per Pigs Sis 52s 20 a ee ee ee ee do. 149525 
1D Ew 8 eet 1 0 Mah 9) wy 0 ge a SS cA Uw ele dose © RST 
Totalerain fed 222 2 Sh See ee es ee ae eee ee ee OOS may ASS 
Average. crain: eaten per, pigedallys2 ose == ae eee doz—s= 4. 80 
Grain: per 100 poundsseainS 2. Sse ea ee ek ee ee ee Q0L=22 365 
During the growing period Lot 2, fed corn meal, middlings, and 
fish meal, made a greater daily gain than Lot 1, receiving the tankage 
supplement. The lot receiving the fish-meal supplement consumed 
122.3 pounds more feed and gained a total of 28.5 pounds more in 
weight than did an equal number of Lot 1 receiving tankage. At the 
close of the growing period the average weight of the pigs fed fish 
meal was 201.5 pounds and that for the pigs getting the tankage 
supplement was 191.5 pounds, a difference of 10 pounds. From ob- 
servation no difference could be noted between the two lots with re- 
spect to growth or general development. This would indicate that 
one ration was not particularly superior to the other in meeting re- 
quirements for growth in pigs. 
RESULTS DURING THE FINISHING PERIOD. 
The same 12 pigs were used for the second period and were divided 
into three lots and fed as follows: 
Lot 3, composed of the same 4 pigs as Lot 2 in the growing period, 
was continued on the same ration, namely, 4 parts of corn meal, 4 
parts of middlings, and 1 part of fish meal. 
Lot 4, composed of 4 pigs from Lot 1, was fed a ration of 9 parts 
of corn meal and 1 part of fish meal. 
Lot 5, composed of the remaining 4 pigs from Lot 1, was fed a 
ration of 9 parts of corn meal and 1 part of tankage. 
Many farmers feed the same ration for both the growing and 
fattening periods, and the intention was to carry out this scheme 
