149 



Illinois Station, Bulletin No. 16, May. 1891 (pp. 28). 



This Itullctin r(tiit:iiiis, in iidditioii lo rcjKirt.s ot" i)i{;-fee(iiii'i; experi- 

 iiM'iits and an aitii'lc (Hi (••(ii^Ktsifc milk sample."^, a labh? of contents aiul 

 index to JJidh-tin.^ No.s. 1-1(5, i.ssned between .May, l.SSS;and ."May, iSiH. 



KXPEUIMENTS INTKJ FEKDl\(i, (i. K. M(tKK()\V, M. A. (l)]>, 407-.')()4). 



Coni vs. corn and t/niss. — Ui-ief report.^ arc ^^iven of four separate 

 trials with Poland-Ciiina ]>ij;s, a\'era<;inj;- in tlu' dilferent trials res[)ee- 

 tively 45, ITS, 1L*S, and (!1 i»ounds each in weijilif. In ea<-Ii trial .separate; 

 lots of pigs received (1) corn ad lihitum ("full feed") and pasturaj;e; 

 -) i)asturajie and ii "half feed" of corn, which was changed to a full 

 I'eed later; and (.'i) corn alone. The lots in the ditferent trials consisted 

 of iVctni ."i to 5 pigs each, and the feeding lasted from 10 to 14 weeks. 

 .\ II were given coal slack and salt. Those given corn alone were ke])t in 

 pens free from vegetation ; the otlu'rs w<'re in a blue-grass pasture. Tlie 

 taltulated data show for each trial only the totals and averages of the 

 corn consumed, gain in live Aveight, and gain per busliel (50 pounds) 

 of corn. The.se in<licate that during the tir.st Oor 8 weeks of each trial, 

 w hen one lot received only the half feed of corn with pasturage, the 

 gain made and the rate of gain perbu.shel of corn were best in the case 

 of the ]»igs on the full ration of corn, either with (U" without pasturage, 

 averaging rather better with pasturage. l>ut during the following- 

 month, when all received a full feed of corn, the lot which had incvi- 

 ously had only a lialf feed of <'orn with grass in each case made the 

 largest t(>tal gain and tlie largest gain i)er bushel of corn. 



dainfroiii dvij com (done. — A tabulated summary is given for eleven 

 ditferent h)ts of pigs, varying in weight from 05.5 to .'Jll ]»ounds, wliich 

 were fed exclusively on shelled corn with coal slack and salt, for periods 

 ranging from 7 to 84 days. 



The larj;L'st gain was 1G.81 pounds pi-r bushel l»y two pigs averaging 311 poiuuls in 

 the fourth week of pen feeding. These two pigs had been on grass, with access to 

 the droppings from two corn-fed heifers. * « f For 4 weeks their gain was at 

 I lie rate of 14. 6(i pounds per bushel. In only onc^ other ease was this equaled in 

 a period of 4 weeks. Two pigs averaging L'OJI.l!? pounds, fed from April I'll to May 

 27. gained at the rate of 14.73 pounds per bushel. In no ease did pigs make satis- 

 factory gains after (j or 8 weeks" feeding on corn alone. * * * 



The food required to make 1 pound of increast* in weight in these trials depcMdcd 

 less on the weight and age of the pigs than on other conditions [/. c. on the dura- 

 tion of the feeding, ]nevious feeding, general eonditicui, etc]. 



S<)«(l:cd rs. dri/ roni. — Two trials were made in each of w Iiicli two |»igs 

 were led soaked corn and two others di-y c(un. with no other food. 



The pigs fed .soaked corn ate more and gained more tlian those ted 

 dry corn. In one trial they gained nior«' and in one less in ]U'oportion 

 to food eat«Mi than those fed dry corn. The differences were not great 

 in either case. 



Soil— Xo. ;3 J 



