504 



Feeds and Feeding. 



and wood ashes were supplied at all times to both lots. The results 

 are condensed in the table: 



Summary of 10 winters' feeding ground corn and shelled corn. 



In 11 out of 18 trials conducted during the 10 years the saving 

 from grinding corn ranged from 2.5 to 18.5 per ct., and in 7 cases 

 there was a loss by grinding, ranging from 1.1 to 11.1 per ct. Divid- 

 ing the total feed consumed by the total gains, it required 501 Ibs. 

 of whole corn and wheat middlings for 100 Ibs. of gain, and only 471 

 Ibs. of ground corn and middlings, a saving of 6 per ct. This means 

 that when corn is worth 50 cts. per bushel there is a saving of 3 cts. 

 on each bushel by grinding, allowing nothing for labor or expense. 

 It was observed that the pigs getting ground corn ate more feed in a 

 given time and gained more rapidly than did those getting shelled 

 corn, which fact no doubt explains the general impression among 

 farmers that pigs do better on ground corn than on shelled. 



Rommel, 1 summarizing 9 trials at 5 stations where whole or ground 

 grains peas, wheat, rye, oats, and barley were fed, either dry or 

 soaked, to fattening pigs, found that it required approximately 473 

 Ibs. of whole grain or 415 Ibs. of ground grain to produce 100 Ibs. 

 of gain a saving of 12 per ct. by grinding. We may then conclude 

 that it pays to grind the small grains always, and to grind corn only 

 when it is desirable to fatten pigs quickly. It is further probable 

 that when pigs have been fed whole corn for a long time and have 

 become quite fat, they then do better on finely ground corn than on 

 whole corn. 



822. The Iowa studies on corn preparation. Kennedy and Rob- 

 bins of the Iowa Station 2 conducted thoro, extensive, and conclusive 

 studies on the value of corn prepared in various ways and fed to a 

 total of 312 pigs of all ages. The last crop of corn was always used. 

 Shelling corn cost 1 ct. per bu. ; grinding shelled corn to meal, 2 cts., 

 and grinding ear corn twice to fine corn-and-cob meal, 6 cts. All 

 statements made are on the basis of 56 Ibs. of shelled corn to the 



1 U. S. Dept. Agr., Bur. Anim. Indus., Bui. 47. 



Bui. 106. 



