SECTION XXVIII. 



COMPUTATION OF RATIONS ACCORDING TO ENERGY VALUES. 



The tables given in the foregoing pages on composition, di- 

 gestible nutrients and standards are those commonly used in 

 compounding rations. Armsby of the Pennsylvania Experiment 

 Station and G. Kuhn and Kellner of the Mockern Experiment 

 Station of Germany have been conducting investigations as to 

 the protein and energy values of feeds, and the requirements 

 of animals, by means of the respiration apparatus. 



The following table of digestible protein and energy values 

 is taken from Farmers' Bui. 346. The energy value represents 

 the production value, or the value of the feed stuffs cited for 

 the production of gain in fattening animals. The protein rep- 

 resents what is available for repair material. 



TABLE IV.— Dry Mattbr, Digkstiblb Protein, and Energy 

 Values Per 100 Pounds.^ 



Feeding stuff 



Total dry 

 matter 

 pounds 



Digestible 

 protein 

 pounds 



Energy 

 value 

 therms 



Green Fodder and Sii<age 



Alfalfa 



Clover — crimson 



Clover — red 



Corn fodder — green > 



Corn silage 



Hungarian grass 



Rape 



Rye 



5'imothy 



Hay and Dry Coarse Fodders 



Alfalfa hay 



Clover hay — red 



Corn forage, field cured 



Corn stover ■ 



Cowpea hay 



Hungarian hay . 



Oat hay 



Soy bean hay 



Timothy hay 



' Farmers' Bui. 346. 



28.2 

 19. 1 

 29.2 

 20.7 

 25.6 

 28.9 

 14-3 

 23-4 

 38.4 



91.6 

 84.7 

 57-8 

 59-5 

 89.3 

 92-3 

 84.0 

 88.7 

 86.8 



2.50 

 2.19 

 2.21 

 0.41 

 1. 21 



1-33 

 2.16 



1.44 

 1.04 



6-93 

 541 

 2.13 

 1.80 



8.57 

 3-00 



2-59 

 7.68 

 2.05 



12.45 

 11.30 

 16.17 

 12.44 

 16.56 

 14.76 

 "■43 

 11.63 

 19.08 



34-41 

 34-74 

 30.53 

 26.53 

 42.76 

 44-03 

 36.97 

 38.65 

 33-56 



