Growth yield, survival, carcass quality, haematological, biochemical parameters and innate immune responses in the grey mullet (Mugil cephalus Linneaus, 1758) fingerling induced by Immunogen® prebiotic

Abstract

The present study goals to shed lights on the effect of prebiotic Immunogen on growth performance, survival, carcass quality, haematological and biochemical factors as well as innate immune responses of the grey mullet (Mugil cephalus L.). Basal diets as prebiotics at three concentrations were added to grey mullet: Treatment-1, 0.5 g kg−1; Treatrment-2, 1 g kg−1 and Treatment-3, 2 g kg−1. Number of 12 fiberglass tanks (60-L) with 3 replicates for the treatment group (n = 30 per tank with average initial weights 8.32 ± 0.39 g) and the control group was considered. After 60 days, grey mullet receiving the experimental diets showed a significantly better growth yield compared to those fed the control diet. Addition of prebiotic to experimental diets led to significant difference (p .05). At the end, humeral innate immune responses (Ig levels and lysozyme activity) were significantly higher in 2 g kg–1 immunogen-fed fish (p < .05). The results indicate that the application of prebiotic to the diet of grey mullet showed a positive effect on growth, glucose, WBC rates and innate immune responses.

Keywords

• Prebiotic
• growth
• grey mullet
• immunogen
• innate immune
• glucose