822 



BOARD OF AGRICULTURE. [Pub. Doc. 



intended to show comfparaiive and not actual commercial 

 values. They are obtained by figuring the digestible pro- 

 tein, fat and carbohydrates at similar prices per pound. 

 The table shows that when wheat bran sells for $18 per ton in 

 the market, corn meal should be worth $19, wheat middlings 

 $21, brewers' grains $21, etc. Again, should wheat l)ran 

 sell for $14, corn meal would be woi-th $15, middlings $16, 

 etc. The prices of themselves have nothing to do with 

 suitable concentrated feed combinations, but are to be used 

 as economic guides in purchasing. Thus, should corn meal 

 sell at $23 per ton, and gluten feed at $21 per ton, it would 

 not, for economical reasons, be advisable to use grain mixt- 

 ures containino; corn meal. 



IV. FERTILIZING VALUE OF CONCENTRATED FEEDS. 

 Aside from their direct feeding eflects, all feed stufis have 

 a distinct fertilizing value. This value depends chiefly on 

 the amount of nitrogen (protein = nitrogen multiplied by 

 G.25) they contain, those that are highest in that ingredient 

 being most valualile. Some feed stuffs, such as cotton and 

 linseed meals, bran and In-ewers' grain, contain consider- 

 able quantities of phosphoric acid and potash. 



Table XI. 



Slioioing Approximate Pounds and Value of Nitrogen, PJwsphoric 



Acid and Potash in. One Ton; also Comparative Fertilizing 



Value, 1 being Poorest. 



Division I. 



Division II. 



Gra'ns, hotnlny, cerealine and oat feeds, 



$5 SO 



