14 



BULLETIN 378, U. S. DEPAKTMENT OF AGRICULTURE. 



growing period the average weiglit of the pigs fed fish meal was 201.5 pounds, 

 while that for the pigs getting the tankage supplement was 191.5 pounds, a 

 difference of 10 pounds. From ohservation there could be noted no difflerence 

 between the two lots with respect to growth in the way of general development, 

 which would indicate that one ration was not particularly superior to the other 

 in meeting requirements for growth in pigs. 



These same 12 pigs were used for the second period and were divided into 

 lots and fed as follows: 



Lot No. 3, composed of the same four pigs as lot No. 2 (in the growing 

 period), was continued on the same ration, which consisted of: 4 parts of 

 corn meal, 4 parts of middlings, 1 part of fish meal. 



Lot No. 4, composed of four pigs from lot No. 1, was fed a ration of : 9 parts 

 of corn meal, 1 part of fish meal. 



Lot No. 5, composed of four pigs from lot No. 1, was fed a ration of: 9 parts 

 of corn meal, 1 part of tankage. 



RESULTS DURING THE FINISHING PERIOD. 



At the close of the 16 weeks' growing period the hogs were divided into 

 different lots in order to have them as uniform as possible for the finishing 

 period. Lot 2 in the growing period was lot 3 in the fattening period. This 

 lot was fed the same ration as in the growing period — 4 parts corn meal, 4 parts 

 middlings, 1 part fish meal. There are many farmers who feed the same ration 

 both for the growing and fattening periods, and it was the intention to carry 

 out such a scheme with this lot of hogs in order to determine the advisability 

 of such a p'ractice. 



Fattening period: May 11, 1915, to June 8, 1915 (28 days). 

 Lot 3. — Ration: 4 parts corn meal, 4 parts middlings, 1 part fish meal: 



Dm'ation of experiment days. . 28 



Pigs number. . 4 



Average first weight pounds . . 201. 5 



Average final weight do 255. 25 



Average gain per pig do 5.S. 75 



Daily gain per pig do ]. 91 



Total grain fed do 90.3 



Average grain eaten per pig daily do 8. 06 



Grain per 100 pounds gain do 421 



Cost of 100 poimds gain. dollars. . 6. 04 



Lot 4. — Ration: 9 parts corn meal, 1 part fish meal: 



Duration of experiment days. . 28 



Pigs number.. 4 



Average first weight pounds . . 191. 5 



Average final weight do 251. 75 



Average gain per pig do 60. 25 



Daily gain per pig do 2.16 



Total grain fed do 956 



Average grain eaten per pig daily do 8. 54 



Grain per 100 pounds gain do 893 



Cost of 100 pounds gain dollai-s. . 5. 35 



Lot 5. — Pv-ation: 9 parts corn meal, 1 part tankage: 



Duration of experiment days . . 28 



Pigs number. . 4 



Average first weight pounds. . 192. 



Average final weight do 24S. CO 



Average gain per pig do 54. 00 



