162 HOW TO FEED YOUR HOGS 



it was worth the money (1917) when fed in conjunction with corn 

 We tried it as a complete substitute for corn on rape, but the 

 results were unsatisfactory. In drylot we fed gluten feed mixed 

 with tankage, half and half, in conjunction with corn, both being 

 allowed free-choice style. On corn and tankage it took 136 days 

 to take fall pigs from 52 to 250 pounds, requiring 360 pounds of 

 com plus 35 pounds of tankage, a total of 396 pounds of feed. 

 Where the tankage was mixed with gluten feed, half and half, it 

 took 150 days or two weeks longer, and the feed requirement was 

 350 pounds of corn plus 40 pounds of gluten feed plus 40 pounds 

 of meatmeal tankage a total of 430 pounds. In this instance the 

 40 pounds of gluten feed saved 10 pounds of corn, but lost 4 pounds 

 of tankage, in addition to its taking more time in feeding. This is 

 interesting testimony, but we hope to show some day just how glu- 

 ten feed can be used to better advantage than we have been able 

 to demonstrate so far. With cattle and sheep we have found that 

 it works well in certain situations. Feeders have not been slow to 

 appreciate that corn gluten feed is all right when put in its right 

 place. 



Corn Oil Cakemeal. Corn oil cakemeal is a much different 

 feed from corn gluten feed because it comprises the germs of the 

 corn with the oil pressed out. Gluten feed, on the other hand, is 

 really the bran plus the flinty portions of the kernel plus the so- 

 called corn solubles, these being secured from the big tanks in 

 which the corn is previously soaked to soften it. The solution taken 

 from the tanks is really a sulphurous acid solution, the sulphur 

 having been burned and the resultant fumes therefrom run into the 

 water solution in order to make the sulphurous acid, which acid 

 prevents fermentation, and thus allows the corn to soften without 

 spoiling. It is then ready for the manufacturing process, degerm- 

 inating and crushing. This preliminary soaking solution is evap- 

 orated down, and then added to the bran and flinty portions of the 

 corn kernel to make the gluten feed. Strictly speaking, corn gluten 

 feed does not contain any of the germs, although some concerns 

 are said to include them. This germ inclusion should be helpful. 

 Corn oil cake meal has nutritious properties differing from gluten 

 feed, and we have found that it is especially valuable in saving 

 meatmeal tankage when added to a corn and meatmeal tankage 

 ration. A number of our Iowa station tests show clearly that 100 

 pounds of corn oilcakemeal added to a corn and meatmeal tankage 

 ration on timothy pasture has been instrumental in saving 80 

 pounds of corn and 40 pounds of tankage, a total of 120 pounds 

 of feed. The following figures gathered by the author, in conjunc- 

 tion with Dunn, covering this point are of interest: 



Corn Oil Cake as a Partial Tankage Substitute 



Six 50-Pound Weanling Pigs to Each Group 110 Days June 15 



to Oct. 3, 1917 



