72 



PRINCIPLES OF FEEDING FARM ANIMALS 



We now have the composition of the ration given as follows : 

 Results of First Trial 



There is, therefore, a deficit both in dry matter and digestible 

 components in the ration ; and it is evident that we have to supply a 

 high-protein feed in order to keep the relation between the two classes 

 of nutrients near to the requirements of the standard. Linseed meal 

 serves this purpose very well, and we may add 2 pounds of this to the 

 ration. 



Results of Second Trial 



* Excess. 



The ration is still below the standard in dry matter and digestible 

 protein, especially the former, but may be sufficiently close to the 

 standard for all practical purposes. If we had to feed a poorer 

 grade of roughage than the hay given, more dry matter would have 

 to be supplied in proportion to the digestible matter, and the deficit 

 of dry matter would have been avoided without increasing at the 

 same time the digestible components of the ration. The Wolff-Leh- 

 mann standards were framed to conform especially to ordinary 

 European feeding practices, which generally include some straw or 

 low-grade roughage in the rations fed to livestock. 



