Department of Animal Science


Date of this Version

January 2000


Published in Nebraska Beef Cattle Report 2000, published by Agricultural Research Division, University of Nebraska Cooperative Extension, and Institute of Agriculture and Natural Resources, University of Nebraska–Lincoln.


This experiment evaluated delayed single-dose Synovex Plus implant or reimplant strategies using Ralgro and Synovex Plus or Synovex S. Delaying Synovex Plus until day 35 produced similar performance and carcass characteristics as Synovex Plus initially or Ralgro initially followed by Synovex Plus on day 70. Delaying Synovex Plus until day 70 reduced gain, but efficiency was similar to other Synovex Plus strategies. Two doses of Synovex S increased marbling, but efficiency declined 4% compared with implant strategies using Synovex Plus.