MAnUAL OF CATTLE-FEEBIHO. 49 



whicli, like liay, and coarse fodders in general, are cut 

 when still iinniature, and v^ith roots; wliile tie grains 

 appear to contain praetieajiy all tlieir nitrogen in tke form, 

 of protein. 



In the present state of onr knovi ledge a simple detertni- 

 nation of the total nitrogen of a fodder is not suflScient, 

 but either the amide-nitrogen mnst be determined or tlie 

 protein must be separated from the other nitrogenous 

 matters, by some one of the nmnerons methods which have 

 been proposed, and a separate estimation of its nitrogen 

 made. 



The error arising from the somewhat Tariable compo- 

 sition of the numerous vegetable albundnoids we ha^e^ 

 unfortunately, no means of correcting. In tl^e p^^mt 

 state of our knowledge, it is impossible to fix 

 separate factory eith^* for Hie ^ver^ ^hm. 

 diJBferent dashes of feeding-stuffs, m&& &e i 

 oid may vary considerably in composition mxm^img to 

 source or mode of preparation, and since the propol-tion^ 

 in which these albuminoids are contained in the same 

 vegetable product also vary. Moreover, we have no knowl- 

 edge whatever regarding tlie composition of the aibumiw- 

 oids of an important cla^ of feeding-stuffs, the so-called 

 coarse fodders. 



For the present we are obliged to continue the use of 

 tlie conventional factor 6.25, bearing always in mind that 

 it is but an approximation to the truth, though probably 

 in most cases a tolerably close approximation. 



Anaides. — ^For the determination of amides Sachsse^s 



method is generally used. The details of the method are 



too technical to find a place here ; a description of the two 



processes proposed by Sachsse may be found in his book, 



'^IMs Ohemie imd Physiologle det Farhhtoffe^ Kohhhydraie 

 3 



