Date of Award
Master of Science
J.A. Corrick Jr
C.C. Chamberlain, W.R. Backus
The purpose of this experiment was to determine if the addition of 10 pounds of limestone per ton of green chop at ensiling to urea-treated corn silage would result in improved feedlot performance and carcass characteristics of feeder heifers.
Sixty Angus and Hereford heifers with an average initial weight of 467 pounds were involved in two experiments at The University of Tennessee's Knoxville Experiment Station. Two treatments (1) 10 pounds of urea per ton of green chop and (2) 10 pounds each of urea and limestone per ton of green chop were used in the two-year study.
In one trial two replications per treatment were involved and in the other, three. Six animals per pen (replication) were involved in both trials.
The results indicated that both rations were acceptable and feedlot performance was not significantly influenced by either treatment studied; however, marbling scores and USDA grades were significantly greater among animals consuming the limestone treated silage. Therefore it may be concluded that either ration may be effectively utilized for growing-finishing feeder heifers.
Clarisse, Richard P., "Effect of addition of limestone to urea-treated corn silage on performance of feeder heifers. " Master's Thesis, University of Tennessee, 1972.