IONOFOROS NA NUTRIÇÃO DE RUMINANTES: UMA REVISÃO

Abstract

Beef cattle farming is one of the main activities in Brazilian agribusiness, and ruminant nutrition has been seeking alternatives to improve feed efficiency and reduce production costs. Among the additives used for this purpose, ionophores such as monensin, salinomycin, narasin, and lasalocid stand out. These compounds act by modulating ruminal fermentation, promoting propionic acid production, reducing methane emissions, and optimizing feed conversion. This study, conducted through an integrative literature review, aimed to analyze the effects of ionophores on ruminant nutrition, highlighting their zootechnical benefits, mechanisms of action, and economic implications. The reviewed studies demonstrated that including these compounds results in greater weight gain, improved nutrient utilization, reduced methane emissions, and higher financial returns for producers. However, the importance of judicious use, respecting appropriate dosages and protocols, is emphasized since improper use can cause intoxications, as observed in reported cases with lasalocid. It is concluded that ionophores are effective and safe tools when used technically and responsibly, contributing to the sustainability and productivity of modern livestock farming.