Growth performance, intestinal morphology, blood biomarkers, and immune response of Thinlip Grey Mullet (Liza ramada) fed dietary laminarin supplement

Abstract Laminarin is a source of immunostimulants and antioxidative biomolecules involved in supporting the performance health aquatic animals. Hence, this study investigated growth performance, intestinal morphology, blood biomarkers, immune response Thinlip Grey Mullet ( Liza ramada ) fed dietary laminarin. For 60 days, mullets were diets supplemented with laminarin at 0, 200, 400, 600, 800 mg kg −1 , then was evaluated, samples collected. The FBW, WG, SGR, PER, carcass lipid content markedly increased, while FCR significantly lowered by 600 . Further, lipase protease activities higher than those histopathological evaluation revealed that all layers villi wall appeared intact without any deteriorating changes. mucosal lining anterior middle segments showed improved morphological appearance increased goblet cells associated level. total protein, globulin, cholesterol fish 400 Furthermore, lysozyme, catalase, glutathione peroxidase laminarin-free diet. superoxide dismutase 0 On other hand, malondialdehyde activity decreased Overall, required 338–761 to reveal best antioxidative, mullets.