Title

Effects of Dietary Supplementation of a Commercial Prebiotic (PrevidaTM) on Survival, Growth, Immune Responses and Gut Microbiota of Pacific White Shrimp, Litopenaeus Vannamei

Document Type

Article

Publication Date

4-2016

Publication Source

Aquaculture Nutrition

Volume

22

Issue

2

Inclusive pages

410-418

DOI

10.1111/anu.12257

ISBN/ISSN

1353-5773

Peer Reviewed

yes

Abstract

A 35-day feeding trial was conducted to evaluate growth, bacterial populations of the gastrointestinal tract (GIT) and immune responses of Litopenaeus vannamei fed diets containing the commercial prebiotic Previda. Diets were formulated to contain Previda at 0, 0.2, 0.5, 1.0 or 1.6 g kg 1 by weight. At the end of the study, differences in weight gain and survival among treatments were not significant (P > 0.05), but denaturing gradient gel electrophoresis analysis revealed that the microbial communities in the GIT changed significantly with the inclusion of dietary Previda at different levels. Previda was therefore able to selectively modify the microbial communities in the shrimp’s GIT. Although individual bacterial species were not identified, enteric populations in shrimp fed the prebiotic at similar levels of inclusion were genetically similar. In addition, shrimp fed Previda at 1.6 g kg 1 responded significantly (P < 0.05) better immunologically with respect to hemocyte phagocytic capacity, haemolymph protein, hyaline cell counts and haemolymph glucose compared with shrimp fed the basal diet. Although shrimp were not exposed to virulent pathogens in this study, the observed upregulation of some of immune responses upon prebiotic supplementation indicates that an improved outcome of such challenges may be anticipated in Previda-fed shrimp under commercial conditions.

Keywords

gut microbiota, innate immunity, prebiotics, shrimp

Disciplines

Biology

This document is currently not available here.

  Contact Author

Share

COinS