Effects of feeds on selected shellfish (Macrobrachium rosenbergii) and finfishes (Planiliza persia and Rhinomugil corsula) in polyculture system: profitability and viability

The experiment was conducted at earthen ponds in the Bagerhat sadar upazila of to examine growth, production capacity, and economic return freshwater prawn (Macrobrachium rosenbergii) with persa (Planiliza persia) corsula mullet (Rhinomugil corsula) under polyculture system. Four treatments, designated as T1, T2, T3, T4 were used study, each three replicates. final weight prawns after 120 days culture highest T1 (72.07 g) lowest (50.23 g), but there no significant difference growth between T2. In T4, where artificial feed not employed, prawn, persa, survival rates lower. produced more (173.27 kg ha-1), while less (617.83 ha- 1). Significantly (p<0.05) higher found (295.97 ha-1) lower (152.28 ha-1). Corsula also observed be (275.70 (155.36 However, had much total net profit from fish farming (1744.94 ha-1, BDT 244694.75 whereas a significantly (925.46 115894.42 According quality (T1) outperforms other commercial feeds terms production, profit. order increase productivity get high on investment short period time. can recommended. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 111-122, June-December 2022