108 ILLINOIS ACADEMY OF SCIENCE 



the sole concentrate than when linseed meal was also used. In 

 this connection one should remember that if the same ration 

 had been fed in Periods 3 and 4 we would have expected that 

 more feed would be required in Period 4, as the steers were 

 more nearly finished in this period. However, before drawing 

 any definite conclusions from these data one should refer to 

 the data of the individual animals, owing to the small number 

 in each lot. It will simplify the study if one speaks in terms 

 of dry substance per pound of gain rather than in terms of 

 corn, hay and linseed meal per pound of gain. 



Referring again to Table 5 the same relative differences be- 

 tween lots are shown as in Table 4. 



Table 6 shows the individual data pertaining to the amount 

 of dry substance per pound of gain. 



Concerning the individual steers of the one-third feed lot it 

 is found that the ration of Steer 666 was much more efficient 

 after the addition of the linseed meal. On the other hand, the 

 ration of Steer 662 was considerably less efficient after the lin- 

 seed meal was introduced into the ration. In case of the two 

 steers of this lot the rations were slightly less efficient after 

 the change was made. Consequently, in view of the wide 

 variation in individual results, it does not seem safe to con- 

 clude that the introduction of oil meal had any effect upon the 

 efficiency of the rations of the steers of the one-third-feed lot. 



Referring to the data concerning the steers of the two- 

 thirds-feed lot it is seen that the rations of Steers 668 and 665 

 were considerably more efficient after the introduction of lin- 

 seed meal. Steer 652 also shows a slight difference in favor 

 of the linseed meal. Steer 657 shows little influence of the 

 linseed meal. This may be accounted for, in part at least, as 

 this steer was off feed and scoured some for several days in 

 Period 4. Taking this into consideration, it seems safe to 

 conclude that the introduction of linseed meal into the ration 

 of the two-thirds-feed lot materially increased the efficiency 

 of the ration. 



Considering the steers of the full-feed lot, it is seen that the 

 introduction of the linseed meal increased the efficiency of the 

 ration to a marked degree in some cases of Steers 659, 661 and 

 664. Steer 663 made less efficient gains after the introduction 



