THE GERMAN STANDARDS 



413 



Computing the Balanced Ration by the Wolff-Lehmann Standards 



The usual method of computing rations, however, is by the use of 

 the German standards (Table I) as a basis, and then determining 

 from the composition tables (Table II) how the various feeds may be 

 compounded so that they will produce approximately the ratio of the 

 feeding standards. Feeding standards have not been sufficiently 

 worked out for poultry. 



In the following dairy ration, the nutritive ratio is much too wide 

 as compared with the standard : 



The following table shows the ration more nearly balanced by the 

 substitution of buckwheat middlings for the corn : 



Nutritive ratio 1 : 7.4 



By adding cottonseed meal, and reducing the hay, the ration con- 

 forms practically to the standard : 



Nutritive ratio 1 : 5.3 



