206 RESULTS OF EXPERIMENTS IN SWINE FEEDING 
is injured by exclusive meal feeding will be reflected in the 
relative feeding value shown by roots and grain, and this fact 
renders extreme variations quite possible. 
Generally speaking, it may be said that sugar beets possess 
the highest feeding value among ordinary roots, and are most 
readily eaten by swine. Mangels, Swede turnips, and carrots 
may be counted practically equal in value, but hogs eat mangels 
with greater relish than they eat turnips. 
Potatoes.—At the Wisconsin Experiment Station, 441 
pounds of potatoes, cooked and fed to swine, proved equal to 
100 pounds of corn meal. In “ Feeds and Feeding,’ Henry 
summarizes Danish experiments, where 400 pounds of potatoes 
proved equal to 100 pounds of mixed meal. In connection with 
these investigations, Professor Henry says: ‘In general, we 
may say that a bushel of corn is worth four and one-half bushels 
of potatoes for fattening purposes when cooked and fed with 
corn meal. Potatoes may have a higher value than the rating 
here given, in furnishing variety in ration to growing animals.” 
Potatoes must be cooked for swine, and this item of expense 
cancels some of the advantage which they possess over roots as 
a.feed for swine. 
The sweet potato contains more starch and less protein than 
ordinary potatoes. In the South, it is used quite commonly for 
hog feeding. The Florida Station (Bulletin 90) reports a four 
weeks’ test with hogs which were nearly full grown. They were 
fed shorts and sweet potatoes in the proportion of one pound of 
shorts to between five and six pounds of sweet potatoes. The 
gains were large, and if the gain in weight is valued at five 
cents per pound, sweet potatoes would show a value of $10.70 
per ton. At the same station, young pigs lost weight on sweet 
potatoes alone, and hogs weighing a little over 100 pounds each 
at the commencement of the test made an average daily gain per 
head of slightly over half a pound. In the last mentioned test, 
the sweet potatoes showed a value of $3.00 per ton when the 
