214 FARM ANIMALS 
to 18 months old the amount of food consumed will be 
smaller than if two, three or more years are spent in at- 
taining the same weight. Thus the food that would have 
been consumed for animal heat and energy during the 
longer period can be saved. 
3. Two classes of beef animals.— Lean 
feeding animals that have depended on 
scant pastures require’a different ration 
when put in the feed lot than those in 
moderate condition. In the thin stock 
the fibers of the flesh need development 
in order that fat may be stored in be- 
tween and among them. Such animals 
require a feeding period of three or four 
weeks, in which a greater quantity of 
protein will be given than later on. 
j| After this preliminary feeding the pro- 
New Ibga Is To Grow portion of carbohydrates and fats may 
be increased. When more than a 
couple of pounds of digestible fat are consumed, appetite 
and digestion are disturbed. 
4, Skim milk calves——Corn should be added to the 
skim milk diet of calves while the change from whole to 
skim milk is under way. At first a very small amount 
may be given. This quantity will be increased when 
AGE OF STEERS IN RESPECT TO COST OF 100 POUNDS GAIN 
aa AVERAGE COST IN DOLLARS OF OO POUNDS GAIN 
«00 200 3.00 400 5.00 600 700 
CALVES 397 
ONE YEAR OLD 883 
TWO YEARS OLD toll 
THREE YEARS OLD 1226 
CHEAPEST GRAINS ARE MADE WITH YOUNG ANIMALS 
As animals advance in age the cost of food for maintenance and increase advances 
also. Compare the four classes of cattle as sketched abeve. 
