242 



Journal of Agricultural Research voi. xvin. no. s 



Table; I. — Ratios of hay, corn, and linseed meal in rations at different periods 0/ 



the experiment 



To determine the effect of variations in the amount of feed consumed 

 the eight steers were divided into four lots of t'wo animals each, and each 

 lot "was given throughout the experiment an amount of feed different 

 from that received by the other lots. The lots were as similar as possible 

 in age, condition, and breeding. One lot was given just enough feed to 

 maintain the weights of the steers about constant; another, as much as 

 the steers would eat readily; another, an amount of feed equal to the 

 maintenance ration plus one-third of the difference between the mainte- 

 nance and the full feed rations; and another, an amount equal to the 

 maintenance ration plus two-thirds of the difference between the mainte- 

 nance and full feed rations. Beginning with the thirty-first week, one 

 steer each from the maintenance, the one-third, and the two-thirds feed 

 lots was gradually put on a full feed ration and kept upon it until the 

 end of the experiment. 



Tables II and III show the consumption of digestible crude protein 

 and net energy per period. Table IV gives the weights of the steers. 

 Table V gives the amounts of nitrogen consumed, the amounts of urinary 

 nitrogen, fecal nitrogen, total excretory nitrogen, and the mtrogen 

 balance of each steer per week. 



Table II. — Digestible crude protein consumed daily per 1,000 pounds live weight 

 [Results expressed in pounds] 



a Removed at end of thirty-fourth week. 



& Removed at end of thirtieth week. 



<= Steers 650, 666, and 652 were on full feed in period 5. 



