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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles Volume : Specialissue, Issue : 13, January,

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com
submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci..Specialissue(13) : 404-413
DOI : https://doi.org/10.20546/ijcmas.2026.sp13.042


Post-Pelleting Application of Fish Gut-Derived Lactiplantibacillus plantarum in Fish Feed: Growth Performance and Water Quality in a Controlled Feeding Trial

H. Preethi, K. Preethi, M. Priya Dharshini, R. Priyadarshini, R. Parkavi and Gomathi Natrajan*
Department of Microbiology, Valliammal College for Women, E-9, Anna Nagar East, Chennai – 600102, Tamil Nadu, India
*Corresponding author
Abstract:

Probiotic delivery through feed is a practical route for introducing beneficial microorganisms into aquaculture systems, but processing and storage conditions can influence bacterial survival. The present study evaluated the preparation of a post-pellet probiotic feed using the fish gut-derived Lactiplantibacillus plantarum, and examined growth-related responses during a controlled feeding trial. An actively growing culture was harvested, washed and concentrated before being mixed with a binder and applied to cooled feed pellets. Control and probiotic-coated diets were prepared under aseptic conditions and stored under refrigeration before use. Fish were acclimatized and allocated to control and probiotic-feed groups maintained under comparable tank conditions for the experimental period. Water quality remained within the ranges recorded in the thesis: temperature 27.1–27.3 °C, pH 7.2–7.3, dissolved oxygen 5.8–6.0 mg/L, salinity approximately 12 ppt and ammonia 0.014–0.015 mg/L. Initial body weight was 10 g in both groups, while the recorded final weights were 22 g in the control and 28 g in the probiotic group. The higher specific growth rate was reported for probiotic-fed fish than for controls and lower feed conversion ratio (17.86 versus 25.00). The study nevertheless demonstrates the feasibility of post-pelleting incorporation of the selected Lactiplantibacillus plantarum and provides preliminary evidence of a favourable growth response under the recorded experimental conditions.


Keywords: Probiotic feed; pelleted feed; Lactiplantibacillus plantarum (Lactobacillus plantarum); post-pellet coating; fish growth; feed conversion ratio; water quality; aquaculture


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How to cite this article:

Preethi H., Preethi K., Priya Dharshini M., Priyadarshini R., Parkavi R. and Gomathi N. 2026. Post-Pelleting Application of Fish Gut-Derived Lactiplantibacillus plantarum in Fish Feed: Growth Performance and Water Quality in a Controlled Feeding Trial. Int.J.Curr.Microbiol.App.Sci. Specialissue(13): 404-413 doi: https://doi.org/10.20546/ijcmas.2026.sp13.042
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license

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