Feeding Standards — Calculating Rations. 



Ill 



Arranging in tabular form the digestible nutrients so round, we 

 have : 



First trial maintenance ration for a 1000-lh. ox at rest. 



The trial ration falls below the standard in each nutrient except 

 fat, the deficiency in crude protein being large. To bring it nearer 

 to the standard, we add 1 lb. each of oil meal and oats. 



Second trial maintenance ration for a 1000-lh. ox. 



This trial ration falls below the standard by more than 1 lb. of 

 dry matter, but this deficiency is unimportant. Dry matter is only 

 an indication of the bulk or volume of the ration, and may vary 

 greatly with different feeds and animals without affecting results. 

 In crude protein and carbohydrates the ration is slightly below the 

 standard, while the fat is in excess. Its nutritive ratio is 1 : 12.5. 

 This ration approximates the standard about as closely as is pos- 

 sible without using fractions of pounds, and is near enough for 

 our purpose. We learn from this that 10 lbs. each of corn stover 

 and oat straw, with 1 lb. each of oil meal and oats, should furnish 

 sufficient food to maintain a resting 1000-lb. ox for 24 hours when 

 neither gaining nor losing in weight. 



