Increases in immune parameters by inulin and Bacillus subtilis dietary administration to gilthead seabream (Sparus aurata L.) did not correlate with disease resistance to Photobacterium damselae

Fish & Shellfish Immunology
Rebeca CerezuelaM Ángeles Esteban

Abstract

The present work evaluates the effects of inulin and Bacillus subtilis, single or combined, on immune parameters, immune-related gene expression and protection against Photobacterium damselae subsp. piscicida in gilthead seabream (Sparus aurata). Three trials were conducted. In the first trial, different concentrations of inulin (10, 15 and 30 g kg(-1)) (as a prebiotic) were administered to determine the optimal concentration for stimulating the seabream's immune system. In the second trial, the optimum concentration of inulin (10 g kg(-1)) was combined with B. subtilis (as a probiotic). Following two and four weeks of the treatment, the main immune parameters, as well as the expression of seven immune-related genes, were measured. In the final trial, fish fed the same diet as in the second trial were challenged intraperitoneally with P. damselae subsp. piscicida (10(9) cfu g(-1)). Treatment groups for the second and third trial were control (non-supplemented diet), inulin (10 g kg(-1)), B. subtilis (10(7) cfu g(-1)) and inulin + B. subtilis (10 g kg(-1) and 10(7) cfu g(-1) respectively). Dietary administration of inulin or B. subtilis for two weeks stimulated the serum complement activity and the IgM level, as well as leucocyt...Continue Reading

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Citations

Oct 27, 2015·Frontiers in Immunology·Ana Montalban-ArquesJorge Galindo-Villegas
Jun 6, 2015·Fish & Shellfish Immunology·Najeeb AkhterMuhammad Mohsin
Jun 29, 2014·Fish & Shellfish Immunology·Seong Kyu SongEinar Ringø
May 24, 2018·Fish Physiology and Biochemistry·N M AbouShabanaA M Abdel-Galil
Dec 22, 2019·Fish & Shellfish Immunology·Mahmoud A O DawoodMd Tawheed Hasan
Mar 8, 2020·Fish & Shellfish Immunology·Cristóbal EspinosaMaría Ángeles Esteban

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