212 



Pork Production 



above indicated that, as a rule, the heavier the grain 

 allowance the larger was the grain consumption for a 

 unit of gain. The exceptions to this rule were when the 

 pigs were fed such a limited ration that their daily gains 

 were less than f pound, and in other cases, when the 

 quality or abundance of the forage was not up to stand- 

 ard. This conclusion is expressed graphically in Fig. 10, 

 which is based on the summarized results of these studies. 



u 



Itf 



<6 



25 



<s 



n 



j5 

 oS 



I *-. / A.W. 



"RATE OT GAIM. 



\L Lua. 



O?? Wore 



FIG. 10 Relation of the rate of gain made by pigs on forage to the 

 amount of concentrates required for each one hundred pounds gain. 



Rate and cost of gains during the entire feeding period. 



It is not possible to say from the figures just considered 

 which is more profitable, a limited or a full grain ration. 

 This is true because pigs fed during the summer on 

 limited rations do not reach marketable weights by the 

 end of the forage season, in consequence of which there 

 is necessitated a longer subsequent period of dry lot 

 feeding for those fed the restricted rations. Since the 



