Abstract

In two field trials, 434 Holstein steers averaging 849 lbs were assigned randomly to three single implant treatments: 1) Synovex- S®, 2) Revalor®-S 120 (120 mg trenbolone acetate (TBA) + 24 mg estradiol), and 3) Revalor®-S 140 (140 mg TBA + 28 mg estradiol). Revalor-implanted steers gained .05 to .10 lb per day faster, but this improvement was not statistically significant (P>.05). Both Revalor-implanted groups produced trimmer carcasses with less (P<.05) backfat than Synovex steers. All other carcass characteristics and beef sensory properties, including taste panel evaluations of tenderness, juiciness, and flavor, were not influenced by implant used.

Keywords: Cattlemen's Day, 1993, Kansas Agricultural Experiment Station contribution, no. 93-318-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 678, Beef, Synovex, Revalor, Holsteins, Feedlot, Carcass traits

How to Cite:

Kuhl, G. L., Simms, D., Blasi, D. A. & Kastner, C. L., (1993) “Comparison of Synovex-S® and two levels of Revalor-S® in heavy-weight Holstein steers”, Kansas Agricultural Experiment Station Research Reports 1(1), 135-136. doi: https://doi.org/10.4148/2378-5977.2173