Previous experiments (CATTLE 81-2) compared Ralgro implanted at the conventional shallow site, about mid-ear between skin and cartilage of the ear, and at an alternate deep site near the base of the ear to Synovex-S for finishing steers. In two experiments, the average improvements in weight gain for Ralgro at the shallow site, the deep site and Synovex-S were 8.3, 11.1 and 12.0%, respectively, over non-implanted controls. Feed efficiency was improved 7.1, 4.8 and 5.6%, respectively, over controls for these implant treatments.
Additional data were considered desirable to include a growing phase as well as a finishing phase using the same implant treatments as in the previous experiments.
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Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Embry, L. B.; Goetz, M. S.; and Luther, R. M., "Implanting Site for Ralgro Compared to Synovex-S for Growing and Finishing Steers" (1982). South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1982. 10.