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Abstract : |
Preliminary investigation was carried into the economics of polyculture of Indian major carps with small indigenous fish species (SIS) mola and chela. The culture strategies consist of stocking the ponds with only carpأƒآ¢أ‚€أ‚â„¢s (T1), carps with mola (T2) and carps with chela (T3). The economic feasibility of three different combinations was analyzed on the basis of the expenditure incurred and total return from sale price of fish in the local market. The net benefits per hectare per 7 months for only carps, carps plus mola and carps plus chela polyculture systems were Tk. 94,925, 88,330 and 68,270 respectively which largely reflected the gross fish production levels of 2,560, 2,412 and 2,176 kg haأƒآ¢أ‚€أ‚آ¾1. However, only carp polyculture system provided higher benefit (Tk. 94,925 haأƒآ¢أ‚€أ‚آ¾1), followed by carps-mola polyculture (Tk. 88,330 haأƒآ¢أ‚€أ‚آ¾1) with non-significant difference but the net benefit in carp-chela polyculture was significantly (P<0.05) lower than others. Benefit-cost ratio was obtained higher in only carp polyculture, followed by carp-mola and carp-chela polyculture systems. Farmers are no need to stock mola for next year in carp-mola polyculture system, in that case total benefit would be higher then other systems. So, carp-mola polyculture may be better as it has ensured higher production of nutritionally rich mola and also economic point of view and this system is encouraging for rural people because they would get mola regularly for consumption and carps as cash crop., |
