The Potential for Homestead Pond Polyculture of Tilapia and Carps in Coastal Bangladesh

Source:
By:Md. Abdul Wahab, Md. Jimi Reza, Mir Mohammad Ali, Md. Nahiduzzaman

DOI: https://doi.org/10.30564/jfsr.v1i1.882

Abstract:

A fishers’ women-led Participatory Action Research (PAR) was conducted in 30 homestead ponds to assess the potential for polyculture of Tilapia (Oreochromis niloticus) and major carps Rohu (Labeo rohita) and Catla (Catla catla) in two coastal fishing villages of Bangladesh. Three treatments, namely T₁ (Tilapia 200 fish per decimal; 1 decimal=40 m²), T₂ (Tilapia 200+ Rohu 32+ Catla 8 fish per decimal) and T₃ (Tilapia 200+ Rohu 8+ Catla 32 fish per decimal), each with 5 replicates, were tried in Hossainpur and Anipara villages. Formulated commercial Mega-feed was applied to the ponds twice daily at an initial rate of 10% body weight (bw)/day of Tilapia down to 4% bw/day throughout the culture period. The water quality parameters of ponds including transparency, salinity and dissolved oxygen significantly varied among treatments except temperature and pH and remained within optimum range for carp polyculture except salinity. The survival rate, harvesting weight and yield of Tilapia were significantly highest in T₁ (85.63±05%, 258.59±18.76 g & 11073±805 kg/ha, respectively) in Anipara and lowest in T₃ (75.63±0.37%, 136.97±10.63 g & 5180±406 kg/ha, respectively) in Hossainpur. The gross fish production was the significantly highest in T₁ (11354±806 kg/ha) of Anipara and lowest in T₁ (6325±227 kg/ha) of Hossainpur. Statistically, the highest net return (866,627±84874 BDT/ha) was found in T₁ of Anipara and lowest in T₃ (279,389±46104 BDT/ha) of Hossainpur with a significantly higher benefit-cost ratio (BCR) obtained in T₁ (3.26±0.20) for Tilapia and lower in T₃ (1.58±0.10) for polyculture Tilapia and carp of Hossainpur. Therefore, it may be concluded that Tilapia production in small homestead coastal ponds has a higher potential than its mix with carps in polyculture for generating food and supplemental income opportunity for coastal fishers’ women in Bangladesh.

References:

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