6 



protein in tliem costs more than the protein in wheat bran. Mixed 

 feed is made up largely of wheat products, as bran middlings, and 

 refuse from otlier grains, as oat hulls. It may also contain sweep- 

 ings from the mill, whole grains, dirt, etc., and can never be relied 

 upon to be uniform in quality. Clover hay is very valuable for 

 milch cows, but since it costs this man so much it must be used 

 sparingly. As he wishes to use his own corn fodder, the following 

 ration is suggested : 



This ration has enough protein and carbohydrates and fat, but the 

 drj' matter is one pound short. It is not necessary to make any 

 change, hoAvever, since the ration is otherwise very good, having a 

 nutritive ratio of 1 : 5.5. If the appetites of the cows warrant it, one 

 lb. of corn meal may be added to the ration with good results. It 

 will be noticed that the table of feeding standards on page liO of 

 Bull. 154 is for an animal weighing 1000 lbs. It is not always 

 necessary to subtract from or add to this standard ration, according 

 as a cow weighs less or more than 1000 lbs. E.xperienced feeders 

 have found that the appetite of a cow is a more important cause for 

 varying the ration than the weight, although it is always well to liave 

 the size of a cow in mind when doling out her meals. 



Ration No. Ji.. — A Roots Ration. 



A different problem is presented by another man who has no home 

 grown feed stuffs but mixed clover and timothy hay, and a quantity 

 of mangels. lie can buy oats for $20.00, corn meal for $18.00, 

 wheat bran for $19.00 and wheat middlings for $20.00. 



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