Research Journal of Biotechnology

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Assessing Glycolipid Surfactant-Enriched Diets on Growth, Immunity and Enzymatic Activity in Catla catla (Hamilton, 1822)

Sahoo Sameer Ranjan, Jena Arabinda, Prusty Shakti Ketan and Pradhan Arun Kumar

Res. J. Biotech.; Vol. 20(8); 204-213; doi: https://doi.org/10.25303/208rjbt2040213; (2025)

Abstract
Rhamnolipid, a bioactive compound derived from Pseudomonas sp. Kmka-114, aimed to assess the effects on growth, non-specific immunity and enzymatic profiles in juvenile Catla catla through graded dietary supplementation. Juvenile catla were randomly selected for thorough evaluations of blood, serum and liver tissues to determine the influence on growth metrics, non-specific immune responses, enzymatic activity and organ modulation. Throughout the feeding trial, there was a significant increase in the activities of myeloperoxidase, lactose dehydrogenase and alkaline phosphatase activity in 300 mg kg−1 biomass day−1 (6X).

Histopathological analysis of liver tissues at this concentration demonstrated no hepatic cell damage, indicating the surfactant’s safety for the fish. Following a withdrawal period, Catla catla displayed a stable assay result, highlighting the necessity for further detailed studies to clarify the underlying mechanisms.