THE FEED REQUIREMENTS OF FARM ANIMALS 117 



The Eckles Standard for Dairy Cows. — Eckles, of the 

 Missouri Station/ after very elaborate experimentation, re- 

 cently has published a standard for dairy cows. He recom- 

 mends the Armsby standard for maintenance, to which he 

 adds the amounts of digestible true protein and net energy 

 per pound of milk as indicated in Table 19. 



Table 19. — Requirements per Pound of Milk of Varying 

 Richness (Eckles) 



The requirement per pound of milk suggested for herd- 

 feeding, where it is not practical to take into account the 

 richness of the milk of each individual, is given in Table 20. 



Table 20. — Requirements Per Pound of Milk From Differ- 

 ent Breeds (Eckles) 



