Effects of Optaflexx Fed in Combination with MGA on Feedlot Heifer Performance

Authors

William A. Grififn, University of Nebraska-Lincoln
Galen E. Erickson, University of Nebraska-LincolnFollow
Bill Dicke, Cattlemen's Nutrition Services, Lincoln, Nebraska
Robert J. Cooper, Cattlemen's Nutrition Services, Lincoln, Nebraska
D. J. Jordon, Cattlemen's Nutrition Services, Lincoln, Nebraska
William Moseley, Pfizer Inc., Kalamazoo, Mich.
Gary Sides, Pfizer Inc., Kalamazoo, Mich.
Jim S. Drouillard, Kansas State University, Manhattan, Kan.
Terry J. Klopfenstein, University of Nebraska-LincolnFollow

Date of this Version

January 2006

Comments

Published in 2006 Nebraska Beef Cattle Report. Copyright © 2005 The Board of Regents of the University of Nebraska.

Abstract

A commercial feedlot experiment was conducted using 1,807 heifers to evaluate the effects of Optaflexx fed in combination with MGA on finishing heifer performance. In heifers receiving MGA throughout the entire 126-143 day feeding period, feeding Optaflexx for the last 31-38 days increased ADG and hot carcass weight compared to heifers fed MGA but not Optaflexx. Heifers fed MGA and Optaflexx had increased DMI, improved feed efficiency and increased final live weight. Carcass quality measurements were not influenced by treatment.