1912. 



PUBLIC DOCUMENT — No. 31. 



49 



The results of the several experiments as expressed in the 

 above coefficients when studied bj themselves, without taking 

 into consideration the chemical composition of the plant, would 

 not reveal much of interest. 



In general it may bo said that those varieties that will l)ring 

 their ears to maturity will have a higher degree of digestibility 

 than those coarser, less mature varieties. This is due to the 

 relatively larger proportion of grain to stalk. The Pride of 

 the iSTorth shows a total digestibilit}^ of 77 as against 72 for 

 the average of the others. It is not entirely clear why the 

 Rustler dent did not show approximately as high a degree of 

 digestibility as the Pride of the North. This may be due to 

 the fact that the animals were fed rather more than they could 

 eat, and probably did not digest quite as thoroughly as though 

 they had received a less amount. The last four — ■ Teaming, 

 Mastodon, Brewer's and Wing's — representing the less mature 

 dent varieties, show about the same degree of digestibility. 



Mature dents (v,'hole plant) will have a digestibility of from 

 70 to 75 per cent., while in case of the less mature dents the 

 digestion coefficient will fall somewhat below that figure. 



2. Proprietary Grain Mixtures. 

 The highest grades of unmixed concentrates have the follow- 

 ing digestion coefficients : — 



Dry 



Matter. 



Ash. 



Protein. 



Fiber. 



Extract 



Starchy 

 Matter. 



Fat. 



Corn meal, . 

 Gluten feed, 

 Cottonseed meal. 



