4 BULLETIN 610, U. S. DEPARTMENT OF AGEICULTUEE. 



Summary of results during growing period, Jan. 19, 1915, to May 11, 1915 



(112 days). 



Lot 1. Ration: 4 parts corn meal, 4 parts middlings, 1 part tankage: 



Duration of experiment . days 112 



Pigs number 8 



Average first weight pounds— 51. 37 



Average final weight do 191. 50 



Average gain per pig do____ 140.13 



Daily gain per pig do 1. 25 



Total grain fed do 4, 060. 5 



Average grain eaten per pig daily do 4. 53 



Grain per 100 pounds gain do 362 



Lot 2. Ration : 4 parts corn meal, 4 parts middlings, 1 part fish meal : 



Duration of experiment days 112 



Pigs number 4 



Average first weight pounds— 54. 25 



Average final weight do 201. 50 



Average gain per pig do 147. 25 



Daily gain per pig do 1.31 



Total grain fed do 2,152.5 



Average grain eaten per pig daily . do 4. 80 



Grain per 100 pounds gain do 365 



During the growing period Lot 2, fed corn meal, middlings, and 

 fish meal, made a greater daily gain than Lot 1, receiving the tankage 

 supplement. The lot receiving the fish-meal supplement consumed 

 122.3 pounds more feed and gained a total of 28.5 pounds more in 

 weight than did an equal number of Lot 1 receiving tankage. At the 

 close of the growing period the average weight of the pigs fed fish 

 meal was 201.5 pounds and that for the pigs getting the tankage 

 supplement was 191.5 pounds, a difference of 10 pounds. From ob- 

 servation no difference could be noted between the two lots with re- 

 spect to growth or general development. This would indicate that 

 one ration was not particularly superior to the other in meeting re- 

 quirements for growth in pigs. 



RESULTS DURING THE FINISHING PERIOD. 



The same 12 pigs were used for the second period and were divided 

 into three lots and fed as follows : 



Lot 3, composed of the same 4 pigs as Lot 2 in the growing period, 

 was continued on the same ration, namely, 4 parts of corn meal, 4 

 parts of middlings, and 1 part of fish meal. 



Lot 4, composed of 4 pigs from Lot 1, was fed a ration of 9 parts 

 of corn meal and 1 part of fish meal. 



Lot 5, composed of the remaining 4 pigs from Lot 1, was fed a 

 ration of 9 parts of corn meal and 1 part of tankage. 



Many farmers feed the same ration for both the growing and 

 fattening periods, and the intention was to carry out this scheme 



