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 other grains, as oat hulls. It may also contain sweep- 

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

 upon to be unifoi'm 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 ])rotein and carbohydrates and fat, but the 

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

 change, however, 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 140 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. Experienced 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 have 

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



liation JVo. ^. — A Hoots 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. He 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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