The Claim

Administering lubabegron fumarate (Experior) to feedlot steers during the final 56 days on feed, with dosing 14 days before harvest, increases slice shear force by 20.1% compared to other timing regimens, indicating reduced meat tenderness.

Source: Effect of beta-agonist type and timing of Experior feeding on calculated cumulative ammonia gas emissions, live growth performance, and carcass outcomes, and objective tenderness outcomes of feedlot steers

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
21score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

When feedlot steers are given lubabegron fumarate 14 days before slaughter during the last 56 days of feeding, their meat becomes 20.1% tougher as measured by slice shear force, compared to other dosing schedules.

See the scientific wording

Feeding lubabegron fumarate (Experior) to feedlot steers for the final 56 days on feed increases slice shear force by 20.1% when administered 14 days before harvest, indicating reduced meat tenderness, while other timing regimens show no significant effect.

Why this might work

The drug causes muscle fibers to grow larger and pack more tightly, while also making the connective tissue between them stiffer. This makes the meat harder to cut when sliced.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Effect of beta-agonist type and timing of Experior feeding on calculated cumulative ammonia gas emissions, live growth performance, and carcass outcomes, and objective tenderness outcomes of feedlot steers

    When cows were given this drug 14 days before being slaughtered, their beef turned out tougher when sliced — exactly as the claim says. Other times of giving the drug didn’t make the meat tougher.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.