Comparison of Synovex-S® and two levels of Revalor-S® in heavy-weight Holstein steers

Authors

Gerry L. Kuhl
D.D. Simms
Dale A. Blasi
Curtis L. Kastner

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

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.

Recommended Citation

Kuhl, Gerry L.; Simms, D.D.; Blasi, Dale A.; and Kastner, Curtis L. (1993) "Comparison of Synovex-S® and two levels of Revalor-S® in heavy-weight Holstein steers," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 1. https://doi.org/10.4148/2378-5977.2173