Document Type

Report

Report Number

94-16

Publication Date

1994

Keywords

feedlot, steers, implant

Summary

The role of implant selection on feedlot performance and carcass traits was evaluated in 200 yearling steers. The steers (initial body weight 709 Ib) were implanted on day 1 or day 70 of the 140-day experiment. Implant combinations (day 1 /day 70) included none/none, Synovex-S + Finaplix-S/Synovex-S + Finaplix-S, Ralgro (36 mg)/Revalor, Synovex-S/Revalor, and Ralgro (72 mg)/Revalor. Day 1 implants increased (P < .05) average daily gain and reduced feed/gain through 70 days on feed. During the 71- to 140-day period implanted cattle exhibited higher (P<.05) average daily gain and lower (P<.05) feed/gain than nonimplanted steers. Specific implant combinations were all of comparable value. Implants increased (P< .05) carcass weights by 55 Ib over nonimplanted steers and increased (P< .05) rib eye area 1 in'. Rib fat thickness and rib eye area/cwt carcass were not affected by implanting. The percentage of choice grade carcasses was reduced (P<.05) from 82.5% to 62.3% by implanting. There were no appreciable differences in carcass traits attributable to specific implant combinations.

Number of Pages

5

Format

application/pdf

Language

en

Publisher

South Dakota State University

Rights

Copyright © 1994 South Dakota State University.

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