32 The Coeorado Experiment Station. 
tening lambs it has not been used much in this state prior to the fall 
and winter of 1911. Those feeders using silage during this feed¬ 
ing period reported profits, while most feeders lost money on ac¬ 
count of unfavorable markets. The addition of silage cheapened 
the ration and therefore gains. Other feeders report tnat the siieep 
is too much of a “mincer” to feed profitably on silage. It is true 
that silage for sheep should also not be too acid. Many feeders are 
putting in silos, and a few years more of experience along this line 
will bring out valuable information on the feeding of silage to fat¬ 
tening lambs. 
L o ti ogs. —For breeding stock, succulence is very valuable in 
the winter ration, but silage is too bulky for the nutriment it con¬ 
tains to be fed to advantage to fattening hogs. Rich concentrates 
are necessary to put on a good finish in a short time. For growing 
fall litters, silage in small quantities would partly take the place of 
pasture which is our cheapest growing feed. 
To Poultry. —Silage for laying hens in the winter is being 
strongly advocated. In fact, some silo companies are now putting 
out a special poultry silo. The economy of the practice must yet 
be more thoroughly demonstrated before it is adopted very gen¬ 
erally by poultrymen. 
Frozen Silage. —There is always some frozen silage in all above 
ground silos even in Colorado'. Heavy feeding of such silage is not 
to be recommended, as it causes scouring. Such silage also- spoils 
very quickly on thawing out. The best method of feeding is to mix 
it with the unfrozen silage and let it thaw out in that way before 
feeding. It is a better plan to keep the frozen silage fed out than 
to let it remain on the walls, as such silage seems to have a refrig¬ 
erating effect in the silo and freezing increases. Freezing is not so 
great that all frozen silage cannot be fed out with the unfrozen in 
the manner indicated above. 
BUILDING INSTRUCTIONS FOR CONCRETE SILOS. 
By Paul V. Maris, Field Representative in Dairying, Animal Hus¬ 
bandry Department, Colorado Agricultural College. 
Note.—These building instructions are based upon work done 
by Mr. Maris, while Junior Dairyman for the United States De¬ 
partment of Agriculture, in co-operation with the Colorado Agri¬ 
cultural College. 
Drawing No. 1, showing the detail of the forms and scaffold¬ 
ing-. was prepared by Mr. A. K. Risser, of the Department of Ag¬ 
riculture, who had charge of the work of that division of this terri¬ 
tory. The photographs from which cuts Nos. 5, 6 and 7 were pre- 
