24 Bulletin 81 



Dry Organic Digestible Digestible Nutritive 



matter matter protein carbohydrates 1 ratio 



Wolff • 96,000 10,000 53,600 1: 5.4 



Wolff-Lehmann( medium) 116,000 10,000 56,400 1:5.6 



Wisconsin 98,000 8,600 59,800 1:7.0 



Connecticut (medium)... 96,000 11,600 57,600 1: 5.0 



Hay, silage and oats 111,000 5,600 65,300 1:11.7 



The total dry matter on hand in the hay, silage and oats is about 

 right. There is a moderate excess of carbohydrates, but protein is seriously 

 deficient, and the nutritive ratio excessively wide. Roughages are in ex- 

 cess and grain feed lacking. 



It is plain that if sales and purchases be made, feeds rich in carbohy- 

 drates should be sold and those rich in protein bought. Timothy hay and 

 oats are readily saleable and have wide nutritive ratios — 1:14.3 and 1:6.2 — 

 and a pound of digestible dry matter is worth more commercially, or, 

 in other words, costs more — at the assumed prices — than in the clover 

 hay and silage, as is seen in the following showing : 



Pounds of Cost of one pound 



Price per digestible of digestible 



ioo pounds dry matter dry matter 



Timothy hay $0.50 49.5 1.01 cents. 



Clover hay 0.38 48.3 0.78 " 



Silage 0.15 18.7 0.80 " 



Oats 0.78 62.3 1.25 " 



The cottonseed, gluten and linseed meals have narrow nutritive ratios, 

 as has also clover hay, and their digestible dry matter and protein are 

 relatively cheap. It will be wise, therefore, to sell costly dry matter — tim- 

 othy and oats — and to buy cheaper, and, for cow feeding purposes, better 

 dry matter — cottonseed meal and the like. 



Let us assume that a market is found for all the timothy hay and oats. 

 There will have been sold and there will remain on hand dry matter and 

 nutrients as shown herewith : 



Dry Digestible Digestible 



matter protein carbohydrates i 



lbs lbs lbs 

 Sold : 25 tons timothy hay and 300 



bushels of oats 51,900 2,300 28,600 



Left on hand : 10 tons clover hay 



and 80 tons silage 59,100 3,300 36,700 



Our feeder has now but little more than half the dry matter needed, 

 but two-thirds the carbohydrates and only one-third the protein. But he 

 has $325 received from the sale of hay and oats to spend in buying feed 

 which is better adapted to his purpose. 



i Ether extract X 2.25 added. See foot note page 20. 



