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Evaluation of Lactobacillus plantarum as a water additive on host associated microflora, growth, feed efficiency and immune response of giant freshwater prawn, Macrobrachium rosenbergii (de Man, 1879)
Author(s) -
Dash Gyanaranjan,
Raman Ram Prakash,
Prasad Kurcheti Pani,
Marappan Makesh,
Pradeep Mangottil Ayyappan,
Sen Swatipriyanka
Publication year - 2016
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.12539
Subject(s) - macrobrachium rosenbergii , lactobacillus plantarum , biology , probiotic , aeromonas hydrophila , prawn , zoology , lactobacillus , feed conversion ratio , food science , lactic acid , bacteria , microbiology and biotechnology , fishery , fish <actinopterygii> , body weight , endocrinology , fermentation , genetics
A 90‐day experiment was conducted by rearing 1020 prawn juveniles (0.54 ± 0.03 g) in water supplemented with three different concentrations of probiotic bacteria viz . T1 (10 7 cfu L −1 ), T2 (10 8 cfu L −1 ), T3 (10 9 cfu L −1 ) and the control (C) (unsupplemented water), to evaluate probiotic effect of Lactobacillus plantarum . In the present study, the growth parameters (WG%, SGR ) and feed utilization parameters ( FCR , PER ) significantly improved ( P < 0.05) in T3. The growth and feed utilization parameters though improved marginally in T1 and T2, the difference was not significant ( P > 0.05) compared to the control. The gastro‐intestinal Lactobacillus sp. count increased significantly ( P < 0.05) in all the treatment groups, whereas the decrease in harmful bacteria was significant ( P < 0.05) in T3 compared to the control. Similarly, the Lactobacillus sp. count in culture water increased significantly ( P < 0.05) in all the experimental groups, whereas the decrease in harmful bacteria was significant ( P < 0.05) in T2 and T3. The immune parameters ( THC , PO and RB activity) and clearance efficiency significantly improved ( P < 0.05) in T3 with concurrent decrease ( P < 0.05) in cumulative mortality against Aeromonas hydrophila challenge. However, water quality did not improved ( P > 0.05) in any of the treatment groups. The results indicate that Lactobacillus plantarum at a minimum concentration of 10 9 cfu L −1 could be used as water additive to confer its probiotic effect in prawn, Macrobrachium rosenbergii . Moreover, future studies with higher probiotic concentrations should be conducted for its efficient commercial scale field application.