What question did this study set out to answer?

This research aims to investigate how varying doses of trenbolone acetate and estradiol benzoate affect growth in newly-weaned beef steers during a dry-lot phase.

May 9, 2026Journal of Animal Science

Effect of Increasing Potency of an Initial Steroidal Implant on Growth Performance of Newly-weaned Beef Steers During the Dry-lot Phase

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Authors

WPWeston J PeschelSouth Dakota State University FPFederico PodversichSouth Dakota State University WRWarren C RuscheSouth Dakota State University

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Implication

Randomized trial evaluates the impact of steroidal implant dose on growth performance in beef steers, suggesting improvement in efficiency.

Key Points

This research aims to investigate how varying doses of trenbolone acetate and estradiol benzoate affect growth in newly-weaned beef steers during a dry-lot phase.
240 Charolais-cross steers fed a low-energy diet over 91 days.
Randomized complete block design with three treatment groups: Control, SYNOVEX Primer, and SYNOVEX Choice.
Data analyzed using linear and quadratic contrasts for dose-dependent effects.
Increasing doses of TBA and EB increased body weight by 2.1% and 3.5%, and ADG by 6.4% and 11.6% for the PR and CH groups compared to Control (P=0.01).
Feed efficiency (G:F) improved by 7.5% and 13.8% with higher dosages, while DMI remained unchanged (P=0.57).

Cite This Study

Peschel et al. (2026) studied this question.

synapsesocial.com/papers/69fed0abb9154b0b82877be7 https://doi.org/10.1093/jas/skag107.240

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Implication

Randomized trial evaluates the impact of steroidal implant dose on growth performance in beef steers, suggesting improvement in efficiency.

Effect of Increasing Potency of an Initial Steroidal Implant on Growth Performance of Newly-weaned Beef Steers During the Dry-lot Phase

Discussion

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Implication

Key Points

Cite This Study

Effect of Increasing Potency of an Initial Steroidal Implant on Growth Performance of Newly-weaned Beef Steers During the Dry-lot Phase

Discussion

Member takes

Implication

Key Points

Cite This Study

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