What does this research mean for the field?

Supplementing feedlot cattle with 3-nitrooxypropanol reduces dry-matter intake and slightly decreases marbling and fat depth, but does not negatively impact overall growth performance, health, or key carcass characteristics. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Evaluate the effects of dietary 3-nitrooxypropanol (3-NOP) supplementation on growth performance and carcass characteristics in commercial feedlot cattle fed a steam-flaked wheat diet.

August 27, 2026Animal Production Science

Effects of 3-nitrooxypropanol on productivity and carcass traits in feedlot cattle fed a steam-flaked wheat diet in a commercial setting

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Authors

MGM H GeorgeIR Dynamics (United States)MGMelissa M. GeorgeUniversity of Georgia BBBrent A. BerryIR Dynamics (United States)

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Implication

Randomized trial demonstrates 3-nitrooxypropanol reduces feed intake without impairing growth in feedlot cattle, indicating safe methane mitigation.

Key Points

Evaluate the effects of dietary 3-nitrooxypropanol (3-NOP) supplementation on growth performance and carcass characteristics in commercial feedlot cattle fed a steam-flaked wheat diet.
Randomized commercial trial including 9,492 crossbred steers and heifers (mean initial body weight 362.8 ± 30.4 kg).
Assigned cattle to either a control diet (no 3-NOP) or a diet supplemented with 3-NOP (100 mg/kg dry matter) over a 106-day finishing period.
Evaluated performance, health, and carcass traits using the pen as the experimental unit and block as a random effect.
Cattle supplemented with 3-NOP had significantly lower dry-matter intake compared to controls (8.78 vs. 8.91 kg/day).
Average daily gain, feed:gain ratio, morbidity rates, hot carcass weight, and dressing percentage showed no significant differences between treatments.
The 3-NOP group showed reductions in P8 fat depth and Meat Standards Australia (MSA) marbling score, but overall MSA index remained unaffected.

Cite This Study

George et al. (2026) studied this question.

synapsesocial.com/papers/6a8fe9da10c91c1e92621cb7 https://doi.org/10.1071/an26060

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Implication

Randomized trial demonstrates 3-nitrooxypropanol reduces feed intake without impairing growth in feedlot cattle, indicating safe methane mitigation.

Effects of 3-nitrooxypropanol on productivity and carcass traits in feedlot cattle fed a steam-flaked wheat diet in a commercial setting

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Key Points

Cite This Study

Effects of 3-nitrooxypropanol on productivity and carcass traits in feedlot cattle fed a steam-flaked wheat diet in a commercial setting

Discussion

Member takes

Implication

Key Points

Cite This Study

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