184 ELEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



Addition of Concentrates. — Let us try 3 lbs. of cotton-seed meal, 

 3 lbs. of corn meal and 2 lbs. of wheat middlings and add these 

 to our roughage. The amounts for the concentrates are cal- 

 culated in a similar manner from Table IV as illustrated for 

 rye straw. 



Dry matter 

 pounds 



Digestible 

 protein 

 pounds 



Energy 



value 



therms 



8 pounds rye straw 



6 pounds oat hay • . . 



3 pounds cotton-seed meal 



3 pounds corn meal 



2 pounds wheat middlings 



Ration 



Requirement 



7432 

 5 040 

 2.754 

 2.673- 

 1.680 



19-579 



0.0504 

 01554 

 10545 

 0.2037 

 0.2558 



1-7198 

 1.70 



1.6696 

 2.2182 

 2.5260 

 2.6652 

 I -553° 



10.6320 

 12.975 



Our ration meets the protein requirement but it is deficient 

 in therms of energy value. 



Balancing the Ration. — In order to bring the energy value to 

 the requirement we must add some corn meal, as this feed stuff 

 contains a relatively larger proportion of therms than the other 

 available concentrates. We must reduce the quantity of cot- 

 ton-seed meal because an addition of corn meal will make the 

 protein too high. We will try 6 lbs. of corn meal and 2 lbs. 

 of cotton-seed meal and compare the ration to the requirement. 



Dry matter 

 pounds 



Digestible 

 protein 

 pounds 



Energy 

 value 

 therms 



8 pounds rye straw 



6 pounds oat hay 



2 pounds cotton-seed meal 



6 pounds corn meal 



2 pounds wheat middlings 



Ration 



Requirement 



7-432 

 5.040 

 1836 

 5-346 

 1,680 



21-334 



00504 



0-1554 

 0.7030 

 0.4074 

 0.2558 



1.5720 

 1.70 



1.6696 

 2.2182 

 I 6840 

 53304 

 I -5530 



124552 

 12.975 



The ration is slightly deficient in digestible protein and energy 

 value. Let us add i lb. of wheat middlings to the ration. 



