CIIAPTEE VII. 



THE CALCULATION OF BATIONS. 



In the foregoing cliapters we liave been chieflj oecnpied 

 with a consideration of the quantities of digestible nutri- 

 ents which are required in the food of farm animals for 

 various purposes, and have only incidentally touclied on the 

 question of how these are to be supplied In tliis chapter 

 we shall consider the manner of compounding a ration 

 which shall contain the quantities of digestible nutrients 

 called for by a feeding standard. 



When animals are pastured, or, when they receive but a 

 single kind of fodder, as good hay, for example, there is 

 evidently no occasion for the use of a feeding standard ; 

 but when, as is usually the case in stall-feeding, the avail- 

 able coarse fodder is deficient in protein and nmst be sup- 

 plemented by bye-fodder, a feeding standard can afford 

 valuable aid in determining the proper proportions of the 

 various feeding-stuffs. 



As an example, we will take the feeding of milk cows 

 according to Wolffs feeding standard, viz. : 



Digestible protein 2.5 pounds. 



'' fat.: 0.4 '' 



^' carbhydrates 12.5 ^' 



T6tal dry matter 24.0 "' 



Kutrxtive ratio 1:54 



