A feeding trial was conducted to evaluate fermented sugar beet pulp (FSBP) as a potential ingredient in the feed for Labeo rohita (Rohu). L. rohita juveniles (average initial weight 15 g) were selected as experimental fish for this study. The experiment was carried out in 21 glass aquariums. The trial was divided into seven (7) treatments each having three replicates. Seven isonitrogenous diets were formulated by incorporating raw and fermented sugar beet pulp (SBP) at 0% (Control), 7%, 14%, and 21% levels. Baker’s yeast waste was used for the fermentation of SBP. After the feeding trial, fish were randomly sampled from each treatment for growth monitoring, body composition, blood and serum biochemical analysis, digestive and antioxidant enzymes. In terms of growth performance of L. rohita, diet T6 containing 21% FSBP resulted in a significantly (P<0.05) higher growth. The overall performance of L. rohita fed fermented FSBP incorporated diets was better in comparison to those fed with RSBP incorporated diets and control. The activities of anti-oxidant and digestive enzymes were observed significantly (P<0.05) higher in fish fed with 21% FSBP (T6). The maximum deposition of protein in the carcass was recorded in fish fed with 21% FSBP diet (T6). The supplementation of FSBP in the diets significantly affected the haematological status of fish (P<0.05). To assess liver health, serum enzymes (AST, ALT, and ALP), lactate dehydrogenase, cholesterol, triglycerides, and total proteins the fermented sugar beet pulp in the feed positively impacted these health markers. In conclusion, it has been observed that the supplementation of FSBP up to 21% in L. rohita diet, effectively improved health parameters without compromising growth performance, haemato-biochemistry, and liver functionality.
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Keywords: Fermented sugar beet pulp (FSBP), Labeo rohita, Growth performance, Health parameters, Liver function
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