PREPARATION OF FEED 



215 



grains as they require it. (Fig. 47.) The gTinder was com- 

 pared with a self-feed ho]iper. In tlie first test Avliok; corn was 

 used m the hopper, and in the second ground corn. The pigs 

 were from four to live months ohJ whew the experiment hegan. 



In the first test Iiopper-fed pigs made an average dailj gain 

 per pig of 1.8.5 pounds, and gxinder-fed ]ngs l.G.') pounds. 



The feed consumed per 100 pounds gain was as follows: 



Hojipi r jiiff^.—Vm-n. -ZM; pcmiids; iiiiil.lliiin's, (iS pduii.ls : milk, :!,3!) pounds. 

 (Iriiuhr pigs. — Corn, ii-i: poiinds; middlings, 70 pounds: milk, :!S,-, pounds. 



Fig. 47. —Hog motor grinder and feeder. With thia machine hogs grind their own feed. 



In tlie second test hopper-fed pigs aA'eraged a daily gain 



per pig of 2.11 pounds, and the grinder-fed pigs, 1.S6 pounds. 



The feed consumed per 100 pounds gain in second test was: 



Hopper pigs. — Corn, 287 pounds; middlings, 71 pounds. 

 Grinder pigs. — Corn, '27.3 pounds: middlings, 80 poimJs. 



The author of the liulletin states : " The motor grinder and 

 feeder gave good results in two tests. However, when used in 

 comparison with hopper feeding of both shelled corn and corn 

 meal, the margin of profit was in favor of the hopper-fed pigs." 



Hopper Feeding vs. Trough Feeding. — Bulletin 1.50 also 

 reports two tests in which the self- feed hopper (Fig. 48) was 

 compared with trough feeding. In the first test were 10 five- 

 months-old pigs, and in the second, 10 three and one-half mouths. 



