RESULTS

Result on the production of fish obtained in three trials of semi-intensive polyculture at Faridpur FTEC and Tongi FSMF are presented in Table VII and graphically in Fig. 1. Net production of fish varied from a minimum of 2941 kg/ha/yr in the second trial at Faridpur to a maximum 4202 kg/ha/yr in the fisrt trial in the same pond at Faridpur FTEC.

Results on the production of fish in integrated polyculture obtained in four farm ponds at Tongi FSMF, Faridpur FTEC, Natore FSMF and Karbala FSMF are presented separately in Table VIII, IX, X and XI respectively and graphically in F1g. 2. The maximum net production of 4759 kg/ha/yr was obtained in integrated fish-chicken system in pond No. 3 at Natore FSMF and the minimum net production of 3585 kg/ha/yr was obtained in fish-chicken integrated system in pond No. 2 at Faridpur FTEC.

Average survival of fish in ponds, at the end of culture period varied from a minimum of 78.93% at Tongi FSMF(pond 3) to a maximum of 86.94% in the first trial at Faridpur FTEC (pond 1) in polyculture system and that in integrated system varied from a minimum of 61.74% at Faridpur FTEC (pond 2) to a maximum of 87.55% at Tongi FSMF( pond 1).

TABLE - VII: PRODUCTION DETAILS OF POLYCULTURE PONDS

Fig. 1. Fish Production in Polyculture System

TABLE-VIII: HARVESTING RECORD OF POND-1 (TONGI FSMF)

Pond area: 1335 m²

Culture period: 335 days

Gross fish production: 610.25 kg/bigha/11 months (4,571 kg/ha/11 months; 4987 kg/ha/yr)

Net fish production: 547.11 kg/bigha/11 months (4098 kg/ha/11 months: 4471 kg/ha/yr)

TABLE - IX : HARVESTING RECORD OF POND-2 (FARIDPUR FTEC)

TABLE - X : HARVESTING RECORD OF POND-3 (NATORE FSMF)

TABLE - XI: HARVESTING RECORD OF POND-4 (KARBALA FSMF)

Ponds

Fig. 2. Fish Production in Integrated Fish-Poultry System

TABLE XII: TOTAL OPERATING COSTS INCURRED IN POLYCULTURE SYSTEM

In polyculture system, species-wise survival rate varied from a minimum of 58.66% (M. carp) to a maximum of 97.83% (Mrigal) in the first trial at Faridpur FTEC pond and that of 72% (Silver carp) to 96% (Rui) in second trial at Faridpur FTEC pond, 41.7% (Sharputi) to 89.9% (Catla) at Tongi FSMF pond(Table VII). Species-Wise survival rate varied from a minimum of 32.86% (Grass carp) to a maximum of 94% (Common carp) at Tongi FSMF and that of 27.5% (Catla) to 82.12% (Silver carp) at Faridpur FTEC, 63.4% (Catla) to 91.87% (Silver carp) at Natore FSMF and 48.6% (Grass carp) to 96.89% (Silver carp) at Karbala FSMF( Table VIII, IX, X & XI).

Details of cost of production of fish and cost-benefit analyses in polyculture system have been worked out and are presented in Table XII and XIII respectively. The costs of production of fish and poultry and cost-benefit analyses of integrated fish-poultry farming at four demonstration ponds have also been worked out and are presented in Table XIV and XV.

Poultry sub-system did not show profitable performance by itself at all the four demonstration ponds. However, the extent of loss of poultry sub-system was minimal at Tongi FSMF than that of other farm ponds. Income from fish sub-system covered the loss of poultry sub-system.

TABLE XIII: COST-BENEFIT ANALYSES OF POLYCULTURE SYSTEM

Sale price of fish : Tk. 35 per kg

TABLE XIV : TOTAL OPERATING COSTS IN INTEGRATED FISH PRODUCTION SYSTEM

TABLE XV: COST-BENEFIT ANALYSIS OF INTEGRATED CARP POLYCULTURE