March 3, 2026Open Access

Effect of previous narasin exposure on performance and gastrointestinal morphometrics of finishing bulls supplemented with either sodium monensin or narasin

Key Points

Feedlot performance was significantly influenced by prior narasin exposure, enhancing growth metrics.
The cattle's gastrointestinal morphometrics varied significantly across different supplementation groups in the study.
The factorial design evaluated the impact of narasin during both backgrounding and finishing phases on performance metrics.
Findings support the idea that strategic supplementation could optimize growth and health in finishing cattle.

Abstract

The objective of this study was to investigate the potential carryover effect of narasin (NAR) supplementation during the backgrounding phase on subsequent feedlot performance and gastrointestinal morphometrics of finishing Nellore bulls. Ninety-six bulls were used in a 2 × 2 factorial design, evaluating conditional NAR supplementation on the backgrounding phase (control CON or NAR) and finishing supplementation (sodium monensin MON or NAR), resulting in four treatments as follows: 1) CON+MON, 2) CON+NAR, 3) NAR+MON, and 4) NAR+NAR. During the ...

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Cite This Study

Ferracini et al. (Thu,) studied this question.

synapsesocial.com/papers/69a7676fbadf0bb9e87e0e80 https://doi.org/https://doi.org/10.37496/rbz5520250086

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