27 



The figures show that the cereals barley, rye and wheat have 

 substantially equal feeding or energy values, and are a little supe- 

 rior to corn, while buckwheat and oats fall noticeably below them. 

 Corn and barley seem from practical experience to be more satis- 

 factory and economical than either rye or wheat. 



Most of the oil seed residues have about equal energy values 

 and substantially the same energy values as do the cereals. They 

 furnish, however, decidedly more protein and hence would be 

 selected in place of the cereals when protein was needed. 



The milling residues vary in energy value among themselves, 

 flour middhngs and rye feed approaching the cereals in energy 

 value with hominy showing a full equality. Wheat bran is de- 

 cidedly below the others, but has its place because of its bulk and 

 laxative effect upon the animal. 



Of the starch and sugar residues, the glutens approximate the 

 cereals in energy value and also furnish a large amount of protein ; 

 dried beet pulp has rather less value than the cereals, although its 

 mechanical condition and abiUty to absorb water give it a special 

 value for milk production; molasses is shown to have about two- 

 thirds of the energy value of the cereals. 



In case of the fermentation residues, brewers' grains appear 

 equal to wheat bran in energy although they have considerably 

 more protein; while corn distillers' grains have a high percentage 

 of digestible protein, and furnish as much energy as the cereals. 



How to Use the Relative Values. As an aid in purchasing, 

 note the relative energy number. If corn meal costs $70 a ton, 

 and hominy feed $55, the dairyman should purchase the latter in 

 accordance with the rule of simple proportion : 



Corn Hominy Corn Hominy 

 100 : 104 : : $70 : X =$72.80 



That is, hominy would be worth $72.80 and could be bought for 

 $55. If corn costs $50 a ton, what is molasses worth? 



Corn Molasses Corn Molasses 

 100 : 65 : : $50 : X =$32.50 



and if molasses costs much more than $32.50 it is an expensive 

 source of nutrition. 



B. PROPRIETARY MIXTURES 



Data are not available on which to base any net energy values 

 for the proprietary mixtures. 



