112 



Feeds and Feeding. 



135. A ration for the dairy cow. In formulating a ration for a 

 dairy cow yielding 22 Ibs. of milk daily, as called for by the feed- 

 ing standard in Example Table IV, we choose from Example Table 

 III 8 Ibs. of red clover hay, 10 Ibs. of corn stover, and 3 Ibs. of oat 

 straw for roughage, with 5 Ibs. each of corn and wheat bran for 

 concentrates. 



Calculations for dry matter and digestible nutrients in trial ration for a 



dairy cow. 



Red clover hay 



In 100 In 8 



pounds pounds 



Dry matter 84. 7-5- 100x8=6. 776 



Crude protein. _ 7.1-*- 100x8=0. 568 

 Carbohydrates.. 37. 8-?- 100x8=3. 024 

 Fat -_ 1.8-^-100x8=0.144 



Oat straw 



In 100 In 3 



pounds pounds 



Dry matter 90.8-5-100x3=2.724 



Crude protein ._ 1.3-5-100x3=0.039 

 Carbohydrates.. 39. 5-*- 100x3=1. 185 

 Fat.. 0.8-5-100x3=0.024 



Corn stover 



In 10 

 pounds 



In 100 

 pounds 



Dry matter 59 . 5-f-100x 10=5 . 95 



Crude protein ._ 1. 4 -f- 100x10=0. 14 

 Carbohydrates.. 31.2-5-100x10=3.12 

 Fat 0.7-4-100x10=0.07 



Corn 



In 100 In 5 



pounds pounds 



Dry matter 89 . 4-5-100x5=4 . 470 



Crude protein . _ 7 . 8-5-100 X 5=0 . 390 

 Carbohydrates.. 66. 8 -H 100x5=3. 340 

 Fat__ 4.3-5-100x5=0.215 



Bran 



In 100 

 pounds 



In 5 

 pounds 



Dry matter ..... 88. 1-j- 100x5=4. 405 

 Crude protein .. 11.9-5-100x5=0.595 

 Carbohydrates ._ 42.0-5-100x5=2.100 

 Fat._ ..... ______ 2.5-^-100x5=0.125 



Arranging these findings we have : 

 First trial ration for a 1000-lb. cow yielding 



Ibs. of milk daily. 



