GKAINS Ai\l) GKOL'NI) FliEDS 359 



is the power which the growing plant possesses of obtain- 

 ing nitrogen from the air. They make first-class forage 

 if harvested at the proper time; they are easily grown, 

 are productive, bring nitrogen to the soil, withstand 

 drouth well, are rich in protein and fat, and furnish an 

 el^icient food to combine with corn in pork production." 

 Among the general conclusions presented by Professor 

 Skinner are these : 



1. Soy beans proved to be a very valuable adjunct 

 to corn, jjeing the most efficient feed tested. 



2. Pigs fed a ration of one part soy beans to two 

 parts of corn produced two and one-fifth times as much 

 gain in tiie same length of time as did those receiving- 

 corn only. 



3. It required 310.6 pounds of feed per 100 pounds 

 of gain where one-third of the ration was soy beans, 

 while it took 557.1 pounds per 100 pounds gain where 

 corn alone was fed. 



4. Comparing the soy bean ration with the middlings 

 and tankage rations, the amount of feed required per 100 

 pounds gain stands: Soy beans and corn, 310.6; mid- 

 dlings and corn, 343.4; tankage and corn, 330.6 pounds. 



5. Corn meal alone was shown to be very inefficient 

 as a pork producer. 



6. The pigs receiving a ration of one-third soy bean 

 meal and two-thirds corn meal produced 402 pounds 

 gain. A ration of one-half middlings and one-half corn 

 meal produced 365 pounds gain. One-sixth tankage and 

 five-sixths corn meal produced 348.5 pounds gain, while 

 a ration of corn meal alone produced only 183 pounds 

 gain. Stated in another way, corn meal alone produced 



