MANGELS 



283 



Average Composition of Mangels 



One ton 

 contains 



Lbs. 



Per cent 

 Water 90.90 



Dry matter 



Ether extract . . . . 



Crude fiber 



Protein 



Ash 



Nitrogen-free extract 



9.10 

 0.20 

 .90 

 1.40 

 1.10 

 5.50 



182 

 4 

 18 

 28 

 22 



110 



An average 



acre-yield 



furnishes 



Lbs. 



3,640 



80 



360 



560 



440 



2,200 



A recent Cornell bulletin (No. 243) quotes the 

 following experiments on the value of mangels for 

 milk: "Rather extensive Danish experiments indi- 

 cate that a pound of dry matter in roots is about 

 equal to one pound of the cereal grains, or to 

 three-fourths of a pound of cotton-seed meal, when 

 fed to milch cows. In these trials no silage was 

 fed, the basal ration in each case consisting of six 

 and one -half pounds of hay and ten pounds of 

 straw per cow. The experiment was so conducted 

 as to eliminate, apparently, the factor of succu- 

 lence, as shown by the following table of average 

 of six experiments including about 150 cows dur- 

 ing several months. Basal ration six and one-half 

 pounds hay, ten pounds straw: 



Nutritive 

 ratio 



5-5.5 



5-5.5 



Daily 

 yield 

 of milk 

 Lbs, 

 22.4 

 23.7 

 22.5 

 24.2 



