106 



Feeds and Feeding. 



the oil meal by the same amomit, the standard would be more 

 nearly reached, although there is already a fairly close agreement. 

 This shows that the fattening steer weighing 1,000 pounds will 

 be nurtured to very nearly his full requirement when receiTing 

 the following ration: 10 pounds of corn stover, 8 pounds of oat 

 straw, 12 pounds of com, 4 pounds of oil meal. 



138. Calculatiag a ration for the dairy cow. — In determining 

 a ration for a dairy cow yielding 22 pounds of milk daily, we 

 choose from the list of feeds in Table C, 8 pounds of red clover 

 hay, 10 pounds of com stover, 3 pounds of oat straw, for rough- 

 age, and 5 pounds each of com meal and bran for concentrates. 

 The digestible nutrients in these are ascertained as follows: 



Calculations for dry matter and digestible nutrients in trial 

 ration for dairy cow. 



Com stover. 



In 100 In 10 



pounds, pounds. 



59.5-=- 100X10=5.95 



1.7h-100x10= .17 



32.4-^100 X 10=3.24 



Red clover hay. 



In 100 In 8 



pounds. pounds 



84. 7 -=-100X8 =6. 776 



6.8h-100x8= .544 



35.8-=-100x8=2.864 



1.7 -^ 100x8= .136 



Oat straw. 



In 100 In 3 



pounds. pounds. 



90.8^100x3=2.724 



1.2-=- 100x3= .036 



38.6-^-100x3=1.158 



.8^-100x3= .024 



.7-HlOOX10= .07 



Com meaL 



In 100 In 5 



pounds. pounds. 



89.4-H 100X5=4. 47 

 7.8-=-100x5= .39 



66.7-=-100x5=3.335 

 4.3^100X5= .215 



Bran. 

 In 100 In 5 



pounds. pounds. ' 



88.1-=-100x5=4.405 '' , , ; 



12.2h-100x5= .61 ' ' 



39.2-i-100x5=1.96 '; 



2.7 -=-100X5= .135 



Arranging these results in tabular form, with the Wolff-Leh- 

 mann standard for comparison, we have the following: 



