MANGELS 283 
AVERAGE COMPOSITION OF MANGELS 
Oxe-ton An average 
contains 4ezeytel 
Per cent Lbs. Lbs. 
Water... ....... 90.90 kee ad 
Dry matter ..... ae 9.10 182 3,640 
Ether extract ...... 0.20 4 80 
Crude fiber... 2... a -90 18 360 
Protein ........ i 1.40 28 560 
USD eens: Heine es ae teas ces Xe. el 2 1.10 22 440 
Nitrogen-free extract .. 5.50 110 2,200 
A recent Cornell bulletin (No. 243) quotes the 
following experiments on the value of mangels for 
milk: “Rather extensive Danish experiments indi- 
eate 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: 
Cotton- Dry matter sae Daily 
as cs Se 
Lbs. Lbs. Lbs. Lbs, 
Lot A. . 7 1.5 4.5 1:8-9 22,4 
LotB... 4 4.5 4.5 1:5-5.5 23.7 
LotC ... 4 1.5 7.5 1:8-9 22.5 
Lot D 1 4.5 7.5 1:5-5.5 24.2 
