'7° 



MAIZE 



CHAP 

 XIII. 



625. Digestibility of Maize Products. — The comparative 

 feeding-value of certain maize foods, based on their digestibility, 

 has been worked out by Henry (1), as follows : — 



Table CXIV. 

 DIGESTIBLE NUTRIENTS IN MAIZE PRODUCTS. 



626. Actual Amounts of Protein, etc., obtainable from each 

 Part of the Grain. — From the tables given in the preceding 

 pages we have seen (a) the amount of each of the four ingre- 

 dients, protein, ash, fat, and carbohydrates, found in the 

 grain of different varieties, breeds, and strains of maize ; (b) 

 the proportion of each of the physical parts of the grain ; and 

 (c) the percentage of each of the four chemical compounds 

 found in each of the physical parts of the grain. 



But these tables do not show us at a glance the actual 

 amount of each substance obtainable from any one physical 

 part of the grain ; for instance, we find from one table that the 

 grain contains 4-67 per cent of oil or fat, and from another 

 that the embryo carries about 82 per cent of the total amount 

 of fat contained in the grain, but they do not show what 82 

 per cent of 4 67 per cent actually amounts to. It is not suffi- 

 cient for the manufacturer to know that the grain contains 4-67 

 per cent oil, because we know that some of this oil is distri- 

 buted among all of the physical parts of the grain, from which 



