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This trial was initiated in 1961, and was continued in the feeding seasons of 1962-63, 1963-64, and 1964-65. The trial compares response in the feed lot from feeding silage made from early maturing corn and silage made from late maturing corn. The average daily ration fed in this trial included 29 pounds corn silage, 1.0 pound alfalfa hay, 6.0 pounds rolled barley, and 1.0 pound steer supplement. Animals in this trial were on feed for an average of 321 days. They went on trial at an average initial weight of 423 pounds. Average final weight 1055 pounds.

Table 37. Average Daily Gain, Feed Costs and Carcass Price, Grade and Yield in the Trial Comparing Silage from Early Maturing and Late Maturing Corn in 1965 and the 4 Year Averages.
Type of Silage Average Daily Gain Feed Cost per 100 Lbs. Gain Average Carcass Price Average Carcass Grade Dressing Percentage
Early Maturing Corn (85 day) 1.95 $12.46 $40.35 Choice 57.0
Late Maturing Corn (120 day) 2.00 $12.45 $40.26 Low Choice 56.1

Four Year Averages

Early Maturing Corn (85 day) 1.80 $13.50 $37.94 Low Choice 56.59
Late Maturing Corn (120 day) 1.76 $13.91 $37.98 Low Choice 56.31

The better average daily gain and the lower feed costs per 100 pounds gain appear to make a slight difference in favor of the early maturing silage. However, when the difference in yield of the two types of silage is taken into consideration, there is practically no difference in the net amount of money to be realized from raising and feeding these two types of silage.

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