Effects of Solid-State Fermented (SSF) Pelleted Feed with <i>Lactobacillus plantarum</i> on <i>Tachysurus fulvidraco</i>: Growth, Digestion, Antioxidant, Immunity, Intestinal Morphology, and Microbiota

Abstract

This study aimed to evaluate the effects of solid-state fermented commercial pelleted feed with Lactobacillus plantarum on growth performance, digestive physiology, antioxidant, and immune capacity, as well as morphology and microbiota in intestinal of Tachysurus fulvidraco. A total of 420 fish (49.96 ± 7.10 g) were randomly allocated to twelve 300 L buckets for a 60 d farming trial. The diets of three treatments were established: the untreated commercial diet (UCD), the commercial diet mixed with fermented liquid (MFLD), and the solid-state fermented commercial diet (SSFD). The results indicated that SSFD treatment had a significant positive effect on the growth performance of T. fulvidraco, with an increase of 15.69% to 16.57% (p p p p Cetobacterium, with the highest abundance in whole intestinal segments. However, in MFLD and SSFD treatments, the abundance of Cetobacterium in the foreintestine significantly decreased (p T. fulvidraco to enhance growth performance but also influence intestinal microbial composition. These findings provide beneficial proof for developing fermented feed of T. fulvidraco.

Keywords

• solid-state fermentation
• <i>Tachysurus fulvidraco</i>
• <i>Lactobacillus plantarum</i>
• growth performance