DAIRY mi;e;ting. ■ 125 



leave us $1,293 ^or the 72,2 pounds of carbohydrates. Dividing 

 $1,293 by 72.2 we will get about 1.8 cents as the cost per pound 

 of the carbohydrates. We may therefore assume that the 

 digestible carbohydrates in the most common form in which we 

 buy it, costs us 1.8 cents per pound. 



THE COST OF PROTEIN IN COTTONSEED MEAL. 



What about the cost of protein? Let us look at cottonseed 

 meal. We will take the ordinary choice cottonseed meal, 41 

 per cent of protein guaranteed. We have only two grades this 

 year, choice and prime, choice 41 per cent protein, prime, 38.5. 

 Everything below that is off meal. The 41 per cent meal will 

 have about 34.9 per cent of digestible protein, 18^ per cent of 

 digestible carbohydrates and 8.8 per cent of digestible fat. 

 Remember that the 8.8 per cent fat we multiply by 2^, and we 

 have the fat equal to 19.8 per cent of digestible carbohydrates, 

 which added to 18.5 makes 38.3 pounds equivalent carbohydrate 

 material. Now as far as we know, these digestible carbohy- 

 drates are just as good as those in corn, where we have found 

 them to be worth 1.8 cents per pound. Multiplying 38.3 by 1.8 

 we find that the digestible carbohydrates in 100 pounds of 

 cottonseed meal are worth 68.9 cents. Cottonseed meal is vary- 

 ing considerably in price, but during November it retailed in ton 

 lots at $32 a ton for choice, or $1.60 a hundred. If the carbo- 

 hydrates are worth 68.9 cents, the protein in 100 pounds of 

 cottonseed meal at $1.60 would cost us 91. i cents. If 34.9 

 pounds of protein costs 91 cents, we will find that our protein 

 is costing us just a trifle under 2.7 cents per pound, so that the 

 value which we assumed for protein of the corn meal we find 

 to apply also to our cottonseed meal. We have thus far estab- 

 lished that in our concentrates, using the two most common 

 feeds, corn and cottonseed meal, as a basis, digestible protein is 

 worth 2.7 cents per pound, or was during the month of Novem- 

 ber, and digestible carbohydrates were worth 1.8 cents per 

 pound. 



THE COST OE CARBOHYDRATES IN MIXED HAY. 



We have one other standard food, hay. We will take mixed 

 hay, that is, a hay made up of timothy, redtop and clover, as we 

 ordinarily seed in this section of the State. It will carry 4.7 



