TH>: HtXJ INDlsTRY. 
131 
of feed used was as follows: Com meal, $20 per ton; shorts, $16 per 
ton; tankage, $30 per ton. 
At the Iowa station" five Lots of 6 pigs each, averaging 205 pounds, 
were fed for forty-nine days, to note the value of packing-house prod- 
ucts. "Each lot contained 3 crossbred Poland China-Yorkshires, 
2 Poland China-Duroc Jerseys, and 1 Poland China-Berkshire." Corn 
was used as the basis of comparison and the pigs were fed as follows: 
Lot I received corn meal alone; Lot II received about 5 parts of corn 
meal and 1 part of beef meal; 6 Lot III received about 5 parts of corn 
meal and 1 part of digester tankage; Lot IV received about 5 parts of 
corn meal and 1 part of tankage. 
The market prices of the corn meal and tankage are given as 
follows: Corn meal, $22 per ton; digester tankage, 832 per ton; 
tankage, 825 per ton. 
The Iowa pigs were shipped to Chicago and the lots were sold 
separately. They brought $7.55, the extreme top of the market for 
the day of sale. 
The following table shows the results of these experiments : 
Tankage in a corn-meal ration for pigs. 
Ration. 
Aver 
Num- : age 
ber weight Total 
of at be- 
pigs. | gin- 
ning. 
Feed per 100 
pounds gain. 
Cost per 
100 
pounds 
gain. 
Indiana: 
Corn meal 10. . . 
Tankagel 
Corn meal 5 
Tankagel 
Corn meal 
Corn meal and 
shorts 10 
Tankagel. 
Iowa: 
Corn meal 
Corn meal and 
digester tank- 
age 
Corn meal 
Tankage. 
Dollars. 
3.80 
4.00 
5.20 
3.60 
5.10 
4.50 
4.90 
These experiments seem to show that tankage has a great deal of 
value for balancing a pig's ration. 
In the Indiana test the use of tankage lessened the amount of grain 
required per 100 pounds gain from 203 pounds to 175 pounds — from 
38.9 to 33.5 per cent — showing tankage to be very profitable with the 
prices that were charged for grain in this instance. 
« Bui. No. 65. 
& One lot of pigs in this experiment were fed to note the value of condimental 
feeds. (See pp. 133, 134 for the results.) 
