PRINCIPLES THAT GOVERN FEEDING 183 



Total dry matter in the ration, 19.094 " 



Again : 



15 pounds of oat straw would yield 

 15x4-100x30-100 of digestible ni- 

 trogenous substances or, 0.1800 " 



7 pounds of clover hay would yield 

 7x12.4-100x62-100 of digestible 

 nitrogenous substance or, 0.53816 " 



Total amount of digestible nitrog- 

 enous substance, 0.71816 " 



Similarly, the 15 pounds of oat straw will yield: 

 Digestible fat .11385x2^ 0.25616 " 



Digestible carbohydrates other 

 than fibre, 2.79840 " 



Digestible fibre, 2.99700 " 



Total amount of digestible non-ni- 

 trogenous substance in the straw, 6.05156 " 



And the 7 pounds of clover hay will yield : 



Digestible fat, .19530x2^, 0.43942 " 



Digestible carbohydrates other 

 than fibre, 1.63254 " 



Digestible fibre, 0.75117 " 



Total amount of digestible non-ni- 

 trogenous substance in the hay. 2.82313 " 



Therefore, the total amount of the digestible non-ni- 

 trogenous substance in the ration is 8.8746^ > pounds and the 

 ratio of digestible nitrogenous substance to digestible non- 

 nitrogenous substance in the ration is as 0.71816 to 8.87469 

 or i : 12.3. The ratio thus obtained is a little too wide and 

 may be narrowed by reducing somewhat the amount of 

 straw fed which would also make it conform more nearly 

 to the total amount of dry matter required in such a ration. 



Feeding standards. A table of feeding standards is 

 simply a collection of feeding standards stated in a regular 



