Abstract

ESCOBEDO-FREGOSO, Cristina; QUIROZ-GUZMAN, Eduardo; MENDOZA-CARRION, Gabriela  and  PENA-RODRIGUEZ, Alberto. Effect of dietary prebiotic inulin and probiotic Bacillus subtilis and Lactobacillus sp., on the intestinal microbiota of white shrimp Litopenaeus vannamei. Biotecnia [online]. 2021, vol.23, n.3, pp.50-57.  Epub Mar 07, 2022. ISSN 1665-1456.  https://doi.org/10.18633/biotecnia.v23i3.1440.

Juvenile Litopenaeus vannamei (1.05 ± 0.1 g) were fed during a 4-week period with four experimental diets: control (Ctrl), inulin as prebiotic (5 g kg-1) (Pre), Bacillus subtilis and Lactobacillus sp. as probiotic (1 x 105 CFU g-1) (Pro), and a mix of inulin + B. subtilis and Lactobacillus sp. (5 g kg-1 + 1 x 105 CFU g-1) (Syn). Syn diet fed shrimps showed a significantly better utilization of feed and higher growth than those in control diet (P < 0.05). The probiotic employed induced higher intestinal bacterial richness, whereas inulin induced higher bacterial diversity in shrimp intestine. The most dominant bacterial phylum in the shrimp intestine among treatments was Proteobacteria with an abundance ranging between 80 and 84 %. Prebiotic diet (Pre) increased relative abundance of Firmicutes in shrimp intestine (2 %) compared to the rest of the treatments (0.6 %). When probiotics were included in the feed (Pro and Syn), a reduction between 3 and 13 % in the relative abundance of Vibrio sp. in shrimp intestine was observed with respect to the control treatment, which represent an advantage to control potential pathogens of this genus.

Keywords : Functional feed; Shrimp; Bacterial modulation.

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