Synovex-S and STEER-oid were compared in a 133-day finishing trial to
evaluate their effects on growth and carcass traits of yearling steers. No
significant differences in average daily gain, feed intake, feed to gain ratio,
carcass weight, ribeye area, fat thickness, quality grade or yield grade were
detected between the two implants at the end of the trial. However, significant
differences in feed efficiency were detected during days 0-35 and 36-63, possibly
due to different release rates of the implants.