EVALUATION OF GROWTH, PROXIMATE COMPOSITION AND FATTY ACID PROFILE OF STRIPED MURREL (CHANNA STRIATA) FED ON BLACK SOLDIER FLY LARVAE
Abstract
Sustainable feed alternatives are essential for reducing reliance on conventional aquaculture diets. This study evaluated the effects of substituting conventional feed with live Black Soldier Fly Larvae (BSFL, Hermetia illucens) on growth performance, feed utilization, and fatty acid composition of Striped Murrel (Channa striata). A 130 day feeding trial compared three diets: Control (100% conventional feed), T1 (50% BSFL partial replacement), and T2 (100% BSFL complete replacement). The Control group achieved the highest weight gain (204.81 g), while T1 (163.26 g) and T2 (144.53 g) showed reduced growth. Moisture adjusted Dry FCR values for BSFL-fed fish (2.90–3.00) were comparable to Control (2.54), demonstrating efficient feed utilization. Survival (78–84%) and whole body proximate composition did not differ significantly among treatments (p>0.05), indicating tolerance to BSFL inclusion.Fatty acid profiles were significantly modulated: T2 exhibited elevated methyl laurate (9.45%), reflecting BSFL lipids, whereas T1 enhanced polyunsaturated fatty acid deposition, including linoleic (18.49%), linolenic (1.06%), and docosahexaenoic acid (7.34%). Overall, partial BSFL replacement provided an optimal balance between growth performance and essential fatty acid retention, supporting its potential as a sustainable feed strategy in C. striataaquaculture.
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