2 BULLETIN 596, U. S. DEPARTMENT OF AGRICULTURE. 
THE FEEDING EXPERIMENT. 
The Animal Husbandry Division having been requested to cooper- 
ate in determining the value of dried pressed potato as a feed for 
swine, decided, after careful consideration as to the probable impor- 
tance of the work, to carry on an extended feeding test at its farm at 
Beltsville. Five tons of dried pressed potato, manufactured at the 
Arlington farm, were shipped to the Beltsville farm for this purpose. 
The experiment was conducted to determine (1) the value of dried 
pressed potato in a ration for fattening hogs when supplemented by 
feeds rich in protein, (2) the effect of dried pressed potato on the 
quality of meat produced. 
METHODS AND RATIONS. 
The experimental feeding was started September 12, 1916, and con- 
tinued 56 days, ending November 7, 1916. The animals selected for 
the work were 12 high-grade Berkshire pigs between 5 and 6 months 
of age, averaging approximately 150 pounds in weight, and quite uni- 
form in age, quality, breeding, and weight. (See fig. 1.) The pigs 
were taken off pasture and put in the dry lot a week before the experi- 
ment began. They were confined in a permanent hog house and ar- 
ranged into pens of three pigs each. These pens had cork-brick 
floors and measured 6 feet by 1\ feet. Attached thereto were out- 
side runs made of concrete and measuring 7 feet by 39 feet. Prior to 
the experiment the ration fed to these pigs consisted of 5 parts corn 
Fig. 1. — Type of hogs used in experimental feeding. 
