Effect of a Commercial Polyphenol Compound on the Performance and Antioxidant Status of Penaeus vannamei

Abstract

The study evaluated the effect of a commercial polyphenol (ELIFE®) on the growth performance and antioxidant defense system of Penaeus vannamei juveniles. The study was completely randomized with three experimental groups and eight repetitions, divided into two 28-day phases. The experimental groups consisted of different dietary inclusion levels of ELIFE® (0.0, 0.5, and 1.0 g kg−1). Five shrimps were stocked in each experimental unit. Growth performance, oxidative stress, and enzymatic activity in shrimp hepatopancreas were assessed. In Phase 1, shrimp fed ELIFE®, regardless of inclusion level, displayed higher specific growth rate, final weight, and final length than the control group. In Phase 2, shrimp fed 1.0 g kg−1 ELIFE® showed higher final biomass and SGR than all other experimental groups; they also displayed increased reduced glutathione and glutathione-S-transferase activities. In both test phases, shrimp fed 1.0 g kg−1 ELIFE® presented increased glutathione reductase activity compared to all other experimental groups. In both test phases, shrimp fed ELIFE®, regardless of inclusion level, exhibited increased glutathione peroxidase activity compared to control groups. Thus, ELIFE® enhanced the antioxidant defense system of P. vannamei and led to better shrimp performance and survival. This study recommends dietary supplementation with 1.0 g kg−1 ELIFE® for P. vannamei juveniles.