342 AGRICULTURE 



during a period of one hundred and ten days. Each of the 

 following rations served fifty lambs for one day : 



Ration No. 1. Ration No. 2. 



60 pounds of silage. 65 pounds of mixed hay. 



50 pounds of mixed hay. 35 pounds of corn. 



35 pounds of corn. 15 pounds of oats. 

 13 pounds of oats. 5 pounds of brewer's grains. 



5 pounds of brewer's grain. 



Ration No. 3. Ration No. 4. 



65 pounds of mixed hay. 60 pounds of silage. 



10 pounds of corn. 50 pounds of mixed hay. 



20 pounds of brewer's grains. 10 pounds of corn. 

 20 pounds of gluten. 20 pounds of brewer's grains. 



5 pounds of oats. 20 pounds of gluten. 



5 pounds of oats. 



It should be understood in studying these rations that 

 at the beginning of the feeding period a larger proportion 

 of roughage and a smaller proportion of grain were fed. By 

 the end of the one-hundred-and-ten-day period this propor- 

 tion had been reversed. The rations as given are the daily 

 average for the whole time. 



The actual amount of nutrients is the same for each of 

 these four rations, yet the results differ considerably both 

 as to cost and the amount of fat produced, as is shown by 

 the following comparisons : 



It will be noted that the most rapid gains, and at the 

 lowest cost per pound were from the rations that contained 



