48 



FARM ARITHMETIC. 



98. In a ton of wheat middlings we find 1,224 pounds 

 of carbohydrates and fat (reduced to carbohydrates). 

 The nutritive ratio is 1 : 4.8. How many pounds of pro- 

 tein in a ton of this food ? Ans. 255 pounds. 



99. What percentage of wheat middHngs is digestible 



protein ? 



Growing Plants Contain Much Water. 



Several common feeding stuffs are here compared to show the large quanti- 

 ties of water they contain. Note the change when harvested and cured as dry 

 provender. 



Important truth. No two feeds have exactly the same 

 nutritive ratio. Some are high in protein; others low. 

 This gives rise to the practice of mixing feeds so as to 

 balance the ration in order that the animal may get pro- 

 tein, carbohydrates, and fat in correct proportions and in 

 sufficient quantities to supply the needs of the body. 



Feeding standards. Different animals require differ- 

 ent nutritive ratios and different quantities of food. The 

 best nutritive ratio and the proper quantity of food are 

 also dependent upon the use to which the animal is put. 



