Dec. I, 1919 



Nitrogen Metabolism of Two- Year-Old Steers 



243 



TablK III- — Net energy consumed daily per 1,000 pounds live weight « 

 [Results expressed in therms] 



a Assuming that the energy requirements vary directly as the two-thirds power of the live weight. 



b Removed at end of thirty-fourth week. 



c Removed at end of thirtieth week. 



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



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y^^o Jix> 



u/sexs o ^ * 



/o M 7* 7t 'm ^o jx t* ** 



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Fig. I. — Nitrogen metabolism of steers in the maintenance lot. 



RELATION OF NITROGEN CONSUMED TO NITROGEN EXCRETED 



Maintenance lot. — Figure i shows the daily consumption of digest- 

 ible crude protein per 1,000 pounds live weight during each period, the 

 daily consumption of net energy per 1,000 pounds live weight during 

 each period, the average live weight per week, the nitrogen consumed 

 per week, the total nitrogen excreted per week, the urinary nitrogen per 

 week, and the nitrogen balance per week of the two steers of the mainte- 

 nance lot. 



