208 FARM ANIMALS 
chased. Ordinarily, the high prices absorb the greater 
part of the profits of the dairy business. On farms 
where the normal supply of roughage is not equal to 
the requirements of the stock, it would be better to dis- 
pose of the least productive cows, bestowing on those 
remaining more care and feed. 
Crop oF CORN AND SORGHUM SILAGE 
The yield on heavy road clay was 15 tons an acre. Formerly this land was in 
rundown condition, but deep tillage, cover crops, thorough cultivation and chemical 
manures made it possible to secure the crop as pictured. 
Next to the legumes no food provides so large a proportion of 
desirable nutrients as corn preserved in the silo. The nutrients in 
silage are very appetizing for winter feeding. Moreover, the suc- 
culence of silage is beneficial; it aids digestion, and, of course, 
favors milk production. It is undoubtedly true that wherever dairy 
cows are kept, the silo is indispensable, both for economical feeding 
and for the production of milk at a reasonable profit. 
10. Protein most important.—The list of concentrates 
for dairy cows is practically unlimited. The cost, how- 
ever, must be considered. It is not enough that a con- 
centrate be labeled a food for dairy cows; it must pos- 
