IRRIGATED FIELD CROPS FOR HOG PASTURING. 11 
the average carrying capacity from 1,434 to 2,720 pounds per acre, 
and the grain fed per 100 pounds of gain from 200 to 292 pounds. 
Taste ViI.—Results secured with 10 lots of pigs on irrigated alfalfa pasture 
supplemented with a 2 per cent ration of corn on the Belle Fourche Experi- 
ment Farm in 1914, 1915, and 1916. 
Gain (pounds). 
Grain 
Rene, Average | Time j eaveraee fed 
Pigs. Time. of | initial | of | otay| Pet | Per | ca ae per 100 
or | weight. | test. acre | pig | C2P2LY) pounds 
pigs. per | ‘per | per per acre.| oF gain 
acre. | day. | day. 
Pounds. | Days. Pounds. | Pounds 
Lina Sas Sone Summon plOl4 eee asec 5 88 | 121 | 1,830 15 | 0.75 2, 720 278 
Oot a. LS Sprinew1915 seeks ccee 4 125 61 938 15 | .93 2, 046 275 
Opa s et eos. Summer, 1915. --........- 7 36 71 | 1,088 | 155353 1, 434 203 
Hotswandss=..| Allrsedson, 19152: so.58 sacelee sees | aseeeee 132 | 2,026 GT ess ee 236 
ThOp AS eee ce SPLINE O15 ees eeeeeeeeee 4 119 61 | 1,064 17 | 1.06 2,300 254 
IDG. Ae Seeeee Summier 19152 --seoeeee 7 38 71 ; 1,044 15] .54 1, 452 214 
Hrotseeandene | All seasons 19152 5 cee oe | 6k ae 132 | 2,108 TGV IU. peste nee 234 
UAH, ab Sseeee Spring 1916s ese = cnc ee 4 102 55 688 12 .75 2,038 270 
Li RYE Se eee Summers 1916e ec. ececee 9 60 70 | 1,274 18} .50 2,348 268 
HoLSorande 7) -|PAUlSeason), 19162. aascasec been «= |o-deeae 125 | 1,962 11G\t Re eos eres 269 
Oa) Hee ee Sprinzsi9l6es sea se one 4 103 55 658 1 sts} 2,058 292 
10) Fit ee ee Summer, 1916.--........- 8 61 70 | 1,348 19} .60 2, 274 238 
ase anau9ee |All Season: 1916). 46 ess.) 2 S52... |<. Gee 125 | 2,006 HG) CFS | SA 256 
MOpHOles ss. - MAN LOU Os cas scecisecieie a 48 36 566 16 - 60 1, 630 200 
Tests made in cooperation with farmers.—The results secured in 
10 cooperative tests in which pigs were pastured on alfalfa supple- 
mented with corn are presented in Table VII. In these tests no at- 
tempt was made to adjust the number of hogs to the area of alfalfa 
so as to secure the maximum carrying capacity. The general prac- 
tice was to allow the pigs to graze at will in alfalfa fields which 
were also used for hay production, so that the data secured show 
chiefly the daily gains and the grain consumed per hundredweight 
of gain. In these tests, furthermore, somewhat higher corn rations 
were used than in the tests at the experiment farms. 
The 10 lots considered in Table VII contained a total of 596 pigs. 
The average initial weight of these 10 lots ranged from 23 to 175 
pounds per head; the pasturing periods varied from 19 to 118 days; 
the corn rations fed ranged from 1.30 to 6.95 per cent, and the char- 
acter of the alfalfa fields pastured also varied. The conditions which 
always influence the grain requirement were, therefore, very diverse. 
1JIn the tests made in cooperation with farmers and discussed in this bulletin, the 
weights of the hogs were secured through the use of a special portable weighing outfit 
illustrated in fig. 3. The use of this simple outfit greatly facilitated the proper con- 
duct of the tests and by giving exact information regarding the gains made by the hogs 
materially increased the interest of swine growers in the work, 
