CHAPTER IV. 
RELATION OF BREED TO ECONOMY OF PRODUCTION. 
Prozasiy the most extensive tests with breeds of swine 
have been conducted by the Ontario Agricultural College and 
the Iowa State Experiment Station. At the Ontario Agricul- 
tural College five tests were conducted in which six breeds of 
swine were compared as to the amount of feed required for 
100 pounds gain live weight. At the Iowa Experiment Station 
three tests were made in which the same six breeds were com- 
pared as to the amount of feed required for 100 pounds gain 
live weight. The results of these two series of tests are, there- 
fore, of considerable importance. In the Ontario tests, only 
the meal is considered in four of the tests, such feeds as dairy 
by-products and green feed, which were the same for all breeds, 
being omitted. In one test the results are given in terms of 
dry matter. 
Ontario Feeding Trials.—Following are the results of the 
Ontario tests: 
Meat ConsuMED PER 100 PounDs GAIN IN WEIGHT. 
ist Test, 
Pounds. Pounds 
Berkshire .........--- 398 Duroc-Jersey ......... 424 
Tamworth ........... 400 Chester White ....... 452 
Poland-China ........ 417 Vorkshiré ..ncsaeu sens 468 
2d Test 
Pounds : Pounds 
Berkshire .....-...--- 327 Chester White ....... 340 
Tamworth .......+-+-- 331 Yorkshire: sis csais cx cen 341 
Poland-China .......- 333 Duroc-Jersey ......... 358 
(41) 
