104 



Feeds and Feeding. 



To complete the ration there is added one pound each of oil meal 

 and com meal. Ascertaining the nutrients in these as before, we 

 haye the second trial maintenance ration, which is as follows: 



Second trial maintenance ration for ox at rest weighing 1, 000 pounds — 

 Wolff-Lehmann Standard. 



This second trial ration falls below the standard by more than 

 a pound of dry matter, but this deficiency is of small importance. 

 In protein the ration is almost up to the standard, exceeding it 

 slightly in carbohydrates, and considerably in ether extract 



The nutritive ratio of this ration is 1 : 1 :". 2 The ration approx- 

 imates the standard as closely as can be attained without using 

 fractions of pounds, and near enough for purposes of illustration. 

 From this we learn that ten pounds each of com stover and oat 

 straw, and one pound each of oil meal and corn meal per day, will 

 nurture a steer weighing 1,000 pounds so that he will neither gain 

 nor lose in weight — that is, such a combination constitutes a 

 "maintenance" ration. 



135. A ration for the fattening steer. — Example Table D shows 

 that the fattening steer (first period) requires more than three 

 times as much protein, five times as much ether extract, and 

 nearly twice as much carbohydrates, as constitute a maintenance 

 ration, with the nutritive ratio narrowed to 1 : 6.5. It is apparent 

 that more concentrated feed must enter into this ration than into 

 the first one. For a trial ration we choose 10 pounds of com 



