Microencapsulation of Lactobacillus plantarum in the alginate/chitosan improves immunity, disease resistance, and growth of Nile tilapia (Oreochromis niloticus)

This study evaluated the effects of microencapsulation of L. plantarum (as a probiotic) with chitosan/alginate biopolymers (MLCA) on innate immune response, disease resistance, and growth performance of Nile tilapia ( Oreochromis niloticus ). Four hundred and eighty fish were randomly distributed in...

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Veröffentlicht in:Fish physiology and biochemistry 2023-10, Vol.49 (5), p.815-828
Hauptverfasser: Bahrami, Zahra, Roomiani, Laleh, Javadzadeh, Narges, Sary, Aboalfazl Askary, Baboli, Mehran Javaheri
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container_title Fish physiology and biochemistry
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Roomiani, Laleh
Javadzadeh, Narges
Sary, Aboalfazl Askary
Baboli, Mehran Javaheri
description This study evaluated the effects of microencapsulation of L. plantarum (as a probiotic) with chitosan/alginate biopolymers (MLCA) on innate immune response, disease resistance, and growth performance of Nile tilapia ( Oreochromis niloticus ). Four hundred and eighty fish were randomly distributed in glass tanks (150 L) and fed with diets including diet 1: control; diet 2: 10 g kg −1 microcapsules; diet 3: 10 8 CFU g −1 L. plantarum ; and diet 4: 10 g kg −1 MLCA for 60 days. The hematology and biochemical indices, lysozyme activity, alternative complement activities, respiratory burst, serum bactericidal activity, as well as growth performance parameters (specific growth rate, feed conversion ratio) were analyzed. White blood cells, plasma protein and globulin concentration, serum lysozyme, and respiratory burst activities of fish were significantly increased ( P < 0.05) in the MLCA diet. A challenge test against Streptococcus agalactiae , at the end of the experiment, showed the highest survival rate of the fish fed with MLCA. Moreover, the fish fed with MLCA showed a significant improvement in SGR (3.12 ± 0.18%) and FCR (1.23 ± 0.20) and had the highest growth performance. These results suggest longer stability of probiotics in the microcapsules, and their immunomodulatory effect can be considered a promising immunostimulant and growth enhancer in the Nile tilapia diet.
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source Springer Nature - Complete Springer Journals
subjects Alginates
Alginic acid
Animal Anatomy
Animal Biochemistry
Animal Physiology
antibacterial properties
Bactericidal activity
Biomedical and Life Sciences
Biopolymers
Blood cells
blood proteins
blood serum
Chitosan
complement
Conversion ratio
Defence mechanisms
Diet
Disease resistance
Feed conversion
Fish
Food conversion
Freshwater & Marine Ecology
Freshwater fishes
glass
Globulins
growth performance
growth promotion
Growth rate
Haematology
Hematology
Histology
Immune response
Immune system
Immunity
Immunity (Disease)
Immunomodulation
Immunostimulants
Innate immunity
Lactobacillus plantarum
Leukocytes
Life Sciences
Lysozyme
Marine fishes
Microcapsules
Microencapsulation
Morphology
Oreochromis niloticus
Probiotics
Respiratory burst
Seaweed meal
Serum
Serum bactericidal activity
specific growth rate
Streptococcus agalactiae
Survival
survival rate
Tanks
Tilapia
Whitefish
Zoology
title Microencapsulation of Lactobacillus plantarum in the alginate/chitosan improves immunity, disease resistance, and growth of Nile tilapia (Oreochromis niloticus)
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