synovex, finaplix, revalor, yearling steers
The objective of this study was to determine if there were differences in daily gain and carcass traits of yearling steers implanted with Synovex-S (S), Synovex-S + Finaplix-S (S + F), or Revalor-S (R). Upon arrival at the feedlot, 264 steers (average weight 731 Ib) were allotted to 24 pens and adapted to a 90% concentrate diet over a period of 23 days. They were implanted on day 20 with either S, S+F, or R. No differences were found between S + F and R (P>.10) at any time during the study. However, combination implants (S+F and R) both resulted in 10% greater weight gains (P< .01) between days 57 and 84 of the study (37 and 64 days postimplanting) than S implanted steers. Some of this advantage was lost after day 11 3 (93 days postimplanting), as combination implant cattle gained almost 8% less per day than those implanted with S (P< .01). During the portion of the study when all implants could be expected to be fully functional (days 9 through 93 postimplanting), combination implant treatments increased daily gain by 3.7% (P<.05) over S. Steers were slaughtered at an average of 11 5 days postimplanting. No differences in carcass characteristics were found (P > .20).
Number of Pages
South Dakota State University
Copyright © 1994 South Dakota State University.
Birkelo, C. P.; Van Der Wal, R.; and Lounsbery, J., "Effect of Synovex, Synovex + FinaPlix, and Revalor on Daily Gain and Carcass Characteristics of Yearling Steers" (1994). South Dakota Beef Report, 1994. 16.