Effects of dietary oils on the growth performance, fatty acid profile, gut and liver histology in murrel (Channa striata) juvenile
Year: 2026
Type: article
Abstract: To evaluate the utilization of different dietary oils by juvenile murrel ( Channa striata ), five isonitrogenous (45%) and similar inclusion levels (8%) of selected oils, namely fish oil (FO), soybean oil (SO), mustard oil (MO), rice bran oil (RBO), and groundnut oil (GNO), were used. A total of two hundred twenty-five (225 ) Channa striata juveniles of average weight (6.35 ± 0.01g) were stocked in triplicates following a completely randomized design in a 150 L fiberglass-reinforced plastic (FRP) tank. Each dietary treatment was tested in three replicate tanks, with 15 fish per tank. The fish were fed three times a day until apparent satiation. At the end of the experiment, final weight, weight gain (WG%), specific growth rate (SGR %/day), feed conversion ratio (FCR g), and protein efficiency ratio (PER) were estimated. Fish fed the FO-based diet performed better than those fed the other oil-based diets in terms of final weight, WG%, SGR(%/day), FCR, and PER. No significant differences ( p>0.05 ) were observed in the dry matter digestibility, protein digestibility, and lipid digestibility coefficients. Whole-body proximate composition and digestive enzymes of fish fed different diets did not differ significantly ( p>0.05 ). Serum AST activity was significantly higher ( p<0.05 ) in the FO-based diet. Serum ALT activity was significantly higher in the SO-based diet. The similar inclusion levels of the selected oil-based diets led to statistically significant differences (p<0.05) in the lipid profile parameters. The haematological parameters like HCT, MCV, MCH, and MCHC were significantly affected by the dietary lipid sources (p<0.05); however, Hb and RBC content did not differ significantly (p>0.05). The present study concluded that fish oil is the most effective lipid source for promoting growth, lipid responses, while plant oils produced different physiological and fatty acid responses in Channa striata .
Source: Frontiers in Marine Science
Institution: Tamil Nadu Dr. J Jayalalitha Fisheries University
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $3,801
OpenAlex ID: W7225816183