His resignation was accepted at a board of directors meeting on 15 January, after two-and-a-half years with the company.
Martin Secco Arias, currently chief executive of Marfrig Beef Southern Cone, has been appointed as his replacement, effective from 15 February 2015.
During Rial’s time with the firm, the executive team has implemented the ‘Focus to Win’ strategy, which has significantly improved the integration and performance of the company.
Secco said: "The strategy of Marfrig Global Foods will not change. Our commitment to pursuing positive free cash flow, margin expansion, sustainable growth and a multi-annual deleveraging process remains the same. We remain committed to creating value for the company."