32 STOCKERS AND FEEDERS. 



times quoted, but is unimportant from a market standpoint 

 owing to the scarcity of animals that may grade as such. 

 They must possess the individual excellence of choice feeders 

 and have choice breeding back of them; that is, there must 

 be unmistakable evidence that they are very high grades, or 

 purebreds, of the beef breeds. 



Fig. 13. Choice Stockers. Bui. 78, 111. Station. 



Choice feeders are the standard grade; they are animals 

 which will make the greatest gain from a given amount of 

 feed, and place that gain in the region of valuable cuts; they 

 must also possess such quality as will insure their dressing 

 out a high percentage of beef. 



Long experience has conclusively shown that constitu- 

 tional vigor is all important in determining the rate of gain. 

 This is probably due to the fact that the rate of gain depends 

 upon vigorous digestion and assimilation of food. This is 

 governed by a free circulation of pure blood, which in turns 



