Md. Tafiqul Islam, Md. Shadin Ahmed Sojib and Md. Al-Amin Sarker

This study assessed the impacts of fermented mustard oilcake (MOC) on the diet of Labeo rohita on growth performance and economic returns. The three-month experiment was carried out in nine cages with three dietary treatments: T₁ (NFD), T₂ (50% FD), and T₃ (100% FD), each replicated three times. Solid-state fermentation of MOC was prepared using Saccharomyces cerevisiae to improve its nutritional quality, which decreases anti-nutritional factors. Water quality parameters remain within acceptable limits and were unaffected by the dietary treatments. Results indicated that fish in the T₂ group had significantly higher weight gain, specific growth rate (SGR), and average daily gain (ADG). Economically, T₂ achieved the highest cost-benefit ratio (0.53) and net profit, demonstrating better feed efficiency. Although T₃ showed moderate growth, the increased feed costs lessened profitability. Overall, a 50% inclusion of fermented MOC could improve growth and be economically feasible for L. rohita, promoting sustainable and cost-effective aquaculture practices.

DOI: 10.22271/23940522.2025.v12.i4b.1117

Pages: 109-115  |  229 Views  64 Downloads