602 



Feeds and Feeding. 



These results indicate a tendency toward a poorer utiliza- 

 tion of the feed in the heavier feeding; the differences obtained 

 are not, however, so great as in the case of winter and summer 

 feeding. 



907. Feed required for 100 pounds of gain. In the following 

 table 1 the grain or its equivalent required for 100 pounds of 

 gain is reported for 355 animals in 16 experiments. These trials 

 were with pigs ranging from 35 to 315 pounds, live weight. The 

 figures given in the second line of the table are the arithmetical 

 means of all figures for pigs coming within the range of live 

 weight given in each column. Seven experiments supplying 

 additional data for the five intermediate periods are given in the 

 third line. The results of these important investigations are 

 summarized in the following table: 



Grain or equivalent fed to produce 100 pounds gain with pigs 

 Copenhagen Station. 



We notice a steady increase in the feed required to produce 

 100 pounds of gain with increasing weight of the animals. Pigs 

 weighing 275 pounds required nearly twice as much feed for 100 

 pounds of increase as those weighing from 35 to 75 pounds. 

 (845) 



908. Barrows compared with sows. The following table, 2 

 which includes data obtained from 1,216 animals, gives informa- 

 tion concerning the comparative fattening qualities of barrows 

 and sows. 



Although data from a large number of animals were employed 

 in the computation, the table shows no practical difference in 



1 Kept. 30, 1895. * Loc. cit. 



