TRRIGATED FIELD CROPS FOR HOG PASTURING. 13 
and the lengths of the pasturing period varied greatly. In fact, 
the diversity was such that the results secured probably indicate 
approximately the limits within which the returns from this method 
of utilizing irrigated alfalfa will fall. A summary of certain fea- 
tures of the results secured is given in Table VITI. 
Tasre VIII.—Summary of determinations of gains, carrying capacity, and grain 
requirement made with 44 lots of pigs on irrigated alfalfa pasture supple- 
mented with corn during the 4-year period from 1913 to 1916, inclusive. 
" Coopera- 
Item of comparison. peotts Huntley. Ue aur Total. 
‘| Z ests 
ISEETTTE CT GE 1) SS ge Gee ite ee ae eee 17 d 10 10 44 
NGmperGh Piose-- = = 5 45-.- hae ses n--G=< 22 teins als 189 51 59 596 895 
Gains per acre, for the season (15 double lots), double 
lots gaining between— 
1,456 and 2,000 pounds 2 
2'001 and 2,500 pounds... 5 
2,501 and 3,000 pounds 3 
3,001 and 3,500 pounds 3 
3, 501 and 4,000 pounds... 1 
4, 001 and 4,292 pounds. - 1 
Gains per acre per day (34 lots), lots gaining— 
Wess Ghani lO pounds: 22. sce 2222-85 2e52% doze TeSys sees Sh ais aligtte See see 1 
Between 10 and 20 pounds...........-..-- GO 55- d 5 NOR Eee see 22 
Between 21 and 30 pounds......--. eS ware Monee 7 AM New &, Hepes | Kae ae aeeten 9 
More than 30 pounds.......-...---..---..- Gesce Pile oamncse | emerticcee lies seeeieee 2 
Average carrying capacity, pounds per acre (34 lots), 
lots carrying— 
Less than 2,000 pounds. .......--.----- number... 1 1 Sule cee se 5 
Between 2, 001 and 3.000 pounds===5-=----- Gdoesae 12 4 Cee eaesaeo 23 
More than ia 000 pounds Betapace aystSrajare sisi te doeeee 4 DF eee Hel Seal Sema eae 6 
Grain consumed per 100 pounds of gain (44 lots), lots 
consuming— 
Less than 200 pounds................- number. - 2 a Ley eal ge eee i 3 
Aim oO POUNOS 322556 < 2 se et sees! Goee-- 8 2 4 2 16 
PAU SOO POUNAS 2a sace ces See cee ee Satie Goss 6 1 6 3 16 
SOU OO BONNOS 2 42s osse OSs) cee dosee 1 OM tS sen ete a Se 1 4 
PAPO POUNUS Saac = see os-cocer merce snes OY. -..\aeseeiecine ace citonsae|ns seeiswins © eee creo cee face setsies 
More (ham 400 pounds...22<--- 621 Ja sec02 <8 do: <..-|Baeeseec i Neapoo ae soe 4 5 
As shown in Table VIII, 30 lots of pigs were involved in full-season 
grazing; that is, 15 lots of pigs were used in pasturing alfalfa during 
the spring period, and the same number of lots were used in the sum- 
mer period. These are referred to in the table as 15 double lots. The 
other hogs were pastured for shorter periods. The table shows that 
the gains per acre for the season ranged from 1,456 to 4,292 pounds. 
Both these gains were made at Scottsbluff, the lowest with lots 2 and 
3, fed a 1 per cent ration of corn, and the highest with lots 16 and 17, 
fed a 3 per cent ration of corn. Of the 15 double lots, 5 gained from 
2,001 to 2,500 pounds per acre, 3 from 2,501 to 3,000 pounds, and 3 
from 3,001 to 3,500 pounds per acre. It is reasonable to expect that 
gains of about 2,500 pounds per acre of alfalfa can be made during 
the season if the supplementary corn ration is as high as 2 per cent. 
Variations in the gains will depend on the hogs, the supplementary 
ration, the crop, and the methods of management. 
Of the 34 lots furnishing data on the gains per acre, 22 lots gained 
from 10 to 20 pounds, and 9 gained from 21 to 30 pounds per acre 
