8 
The: Colorado Experiment Station. 
DURUM WHEAT, CORN, AND SELECTED TANKAGE. 
Lots 5 and 6 were fed rations containing these grains. Lot 
5, which received six pounds of durum wheat to every pound of 
tankage, made a very good gain in weight, and required only about 
an average amount of feed to produce ioo pounds gain, so that if 
the prices of these feeds were not considered the ration would be 
pronounced a good one. Both feeds are expensive, however, and 
consequently the cost of gain is too high. 
Lot 6, fed durum wheat, three pounds, corn, three pounds, 
and tankage, one pound, made the best gains of any lot, gaining 
an average of eleven and one-half pounds per head each week. 
These required less feed for gain than any of the other lots. If 
durum wheat can be obtained at the price of corn, this ration will 
prove very economical. 
barley, corn, alealea hay. 
This ration proved very satisfactory the previous winter, but 
did not show quite so great economy in the present experiment. 
The amount of feed required for gain was somewhat greater than 
the previous winter, and the gains made were less than those made 
by the other lots in this experiment. This might be accounted for 
by a difference in the quality of the hays. At any rate, in this in¬ 
stance, the barley, corn, hay ration proved more costly than barley 
and tankage; corn and tankage; or barley, corn and tankage; 
although at a cost of $5.10 for each hundred pounds gain, it is still 
a very good ration. 
barley, corn AND SELECTED tankage. 
This ration, with the feeds in the proportion of 3 13 : 1, gave 
the best results of any tried in this experiment. The gain made was 
eleven and two-fifths pounds per head each week. The amount of 
feed required for gain was only 336 pounds of grain and 56 pounds 
of tankage, and the cost was $4.5° for each hundred pounds gain. 
This cost was practically the same as that for the corn, barley, and 
alfalfa lot and for the barley and shorts lot of the previous year. 
CORN AND TANKAGE, AND BARLEY AND TANKAGE. 
The corn and tankage ration was not quite as economical as 
the barley, corn, and tankage; but was slightly better than the 
barley and tankage, the cost of 100 pounds gain for the three lots 
being $4.71, $4.50 and $4.89. All three of these rations were 
satisfactory and economical. 
It will be seen from the following table that the tankage and 
the wheat rations all supplied a large proportion of protein, while 
the alfalfa ration apparently did not. It is probable, however, that 
the alfalfa rations actually furnished a larger percentage of protein 
than the tables show, because the pigs eat only the leaves and finer 
