172 ELEMENTARY AGRICULTURAL CHEMISTR!^ • 



The albuminoid ratio is : * 



G-8 ^ 6-8 ^ 6-8^ = _l_ 



35-8 + (1-7 X 2-3) 35-8 + 3-91 3971 5-84* 

 1 : 5-84 



For the reasons ah^eady stated, unless the distinction between 

 true albuminoids and amides is made in the analyses, the 

 albuminoid ratio calculated from the " protein " {i.e., the per- 

 centage of nitrogen x 6*25) may in certain cases — e.g., roots, 

 grasses, and silage — be very misleading. If the amides present 

 are considered, the best plan is probably to class them with the 

 non-albuminoids and consider them as about equal to half 

 their weight of starch. With a ration consisting of several 

 foods the calculation of the albuminoid ratio is somewhat 

 more complex. Thus, if it is desired to calculate the albuminoid 

 ratio of a ration composed of the following mixture : 



* Digestible crude fibre should really be included in the calculation 

 and be reckoned as of equal value to starch. It is of importance in 

 fodder crops, and when it is taken into account the albuminoid ratio 

 will be " wider," e.g., about X : 77 in the example givers, 



