Demonstration of Feed-based Aquaculture in adivasi Villages of Tripura, North-East India

AbstractThe study aimed to evaluate the effectiveness of feed-based aquaculture (FBA) in enhancing fish productivity in an adivasi village in Tripura, Northeast India, under the Schedule Tribe Component (STC). Six ponds managed by farmers, each measuring 0.08 ha and 1-1.5 m in depth, were utilized to compare two types of feed: floating feed (FF) and conventional feed (CF), made from a 1:1 mixture of rice bran and mustard oil cake, with community participation. The ponds were stocked with Catla (40%), Rohu (30%), and Mrigal (30%) at a stocking density of 10,000 fish per hectare. Fish were fed daily at 2 per cent of their biomass. Over six months study period, monthly monitoring of water quality parameters showed no significant fluctuations. At the end of the study, fish growth assessment revealed that Catla and Rohu exhibited better weight gain (P=0.05) with FF, while Mrigal performed better (P=0.05) with CF. FF also resulted in higher fish survival rates and improved feed conversion ratios (P=0.05). Total fish production was significantly higher (P=0.05) with FF (4052 kg/ha) compared to CF (3520 kg/ha), indicating the profitability of FBA with FF. The study concluded that FBA, whether using FF or CF, can enhance fish productivity. FF is highly recommended for increased production in adivasi villages. The participatory approach used in the study facilitated community mobilization and empowerment. Further participatory technology assessment and adoption are recommended for sustainable aquaculture development in underprivileged areas.