Marked variations in gut microbiota and some innate immune responses of fresh water crayfish, marron ( Cherax cainii , Austin 2002) fed dietary supplementation of Clostridium butyricum
Clostridium butyricum
as a dietary probiotic supplement in fishmeal based diet on growth, gut microbiota and immune performance of marron (
Cherax cainii
). Marron were randomly distributed into two different treatment groups, control and probiotic fed group. After 42 days of feeding trial, the results revealed a significant (
P
< 0.05) increase in growth due to increase in number of moults in marron fed probiotics. The probiotic diet also significantly enhanced the total haemocyte counts (THC), lysozyme activity in the haemolymph and protein content of the tail muscle in marron. Compared to control, the 16S rRNA sequences data demonstrated an enrichment of bacterial diversity in the probiotic fed marron where significant increase of
Clostridium
abundance was observed. The abundance for crayfish pathogen
Vibrio
and
Aeromonas
were found to be significantly reduced post feeding with probiotic diet. Predicted metabolic pathway revealed an increased activity for the metabolism and absorption of carbohydrate, degradation of amino acid, fatty acid and toxic compounds, and biosynthesis of secondary metabolites.
C. butyricum
supplementation also significantly modulated the expression level of immune-responsive genes of marron post challenged with
Vibrio mimicus
. The overall results suggest that
C. butyricum
could be used as dietary probiotic supplement in marron aquaculture.
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A Irianto, B Austin
Erchao Li, Chang Xu, Xiaodan Wang et al.
Siavash Mirarab, Nam Nguyen, Sheng Guo et al.
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- Published
- Aug 27, 2019
- Vol/Issue
- 7
- Pages
- e7553
- License
- View
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