184 RESULTS OF EXPERIMENTS IN SWINE FEEDING 
Four groups of pigs eleven weeks old were used in the 
test, and all groups were fed a meal mixture composed of corn 
meal, wheat middlings, wheat bran, and linseed meal. 
Lots 1 and 2 were given free access to soft coal and charcoal, 
respectively, lot 3 was fed one ounce of the tonic to every 10 
pounds of meal, and lut 4 was fed nothing but the meal ration. 
The average daily gain per pig in the four lots was as 
follows: Soft coal, .695 pound; charcoal, .738 pound; tonic 
mixture, 5S pound; no corrective, .614 pound. 
The cost of producing 100 pounds gain in weight was as 
follows: 
Lot 1. Lot 2. Lot 3. Lot 4. 
Soft coal. Charcoal. Tonic. Nothing. 
Meéal, «4 ames create bens $5.93 $5.42 $4.74 $5.84 
Corrective: 2 sis ian con ees 20 14 mip 
Total cost ....... $6.13 $5.56 $4.85 $5.84 
Tt will be noticed that the lot receiving the tonic mixture 
made the most rapid and most economical gains, the lot receiv- 
ing charcoal coming second. The hogs which were allowed 
access to soft coal made greater gains than those fed meal 
alone, but the gains were more expensive. Tt is stated that the 
hogs fed correctives had a decidedly better appetite than those 
which received none, 
The experiment indicates that correctives or tonics mav be 
used to advantage at times, but that it is easily possible to 
pay too much for them. 
REVIEW. 
1. What can you say of the value of Canada field peas for swine? 
In what forms are they fed? 
2. In what ways is barley better than corn for certain lines of pig 
fceding? 
3. Why is barley not used more? 
4. Discuss the value of wheat for swine. 
5. May frosted wheat he used with good results? 
