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Economics of Tilapia Culture in Watershed Pond in Bangladesh

Muhammad Mizanur Rahman
Programme Assistant
IUCN (International Union for Conservation of Nature), Bangladesh Country Office, Dhaka, Bangladesh

Mostafa Shamsuzzaman MD
Department of Coastal and Marine Fisheries, Fisheries Faculty, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Saad Mahmood
IUCN (International Union for Conservation of Nature), Bangladesh Country Office, Dhaka, Bangladesh

Subrata Sarker

Faruk Alam MD
Institute of Marine Sciences and Fisheries, University of Chittagong, Chittagong-4331, Bangladesh

Abstract/ Executive Summary:

With a view to assess the suitability of mono-sex Tilapia (Oreochromis niloticus) culture using downstream flow from hills by observing their growth, survival and production in watershed pond, an experiment was carried out in a commercial aquaculture farm Mrittika Fisheries, Odolia, Hathazary, Chittagong. The duration of {each} culture period was 4 months. Stocking densities of the three culture ponds were same as, 10 individuals/m². All the fish were of same age group having mean body weight about 1.2 gm. A commercial pellet feeds were used at the rate of 20% of body weight during first 15 days and then the feeding rate was reduced to 18%, 15%, 12%, 10%, 8%, 6%, and 5%, receptively with 15 days interval and the measured survival rate of fish was 84.33%, 77%, 72.33%, 69%, 66.33%, 65%, 63.67%, and 62.67% receptively in 15 days interval. From the economic analysis it was found that the net profit accrued out of the three ponds (1.20 hector) was (BDR=Bangladeshi Taka, 1 US$=81 BDT) BDT 547177.77, whilst the operational cost was BDT 700544.23, the rate of profit ratio obtained is 78.11% in comparison to the operational cost. The results of the specific study indicate that the culture of tilapia in the watershed ponds by using downstream water flow is exceedingly suitable even with the high stocking density. The resultant production was good with high profitability with less input of operational cost and reduced risk.

Keywords: Economics, Tilapia Culture, Analysis. Watershed Pond

Location: Chittagong District.

Start Date: 01-01-2012

End Date: 30-04-2012

Program Area: Socio-economic and Policy

Commodity: Tilapia

Objectives:

To analyse the economics of tilapia culture in watershed pond with water and soil parameter analysis.

Methodology:

The research study was conducted at Mrittika fisheries, situated at Odolia, under Hathazary Upazila of Chittagong District. The study area is situated about 20 km North from Hathazary Upazila Sadar. The geographical location of study area (Hathazary Upazila) is 91°41” E to 91°54” E and 22°39” N to 22°23” N. This experiment was conducted in three practical fish culture pond having size 80 meter×50 meter each. Spring water (local name is “Chara”) was used to fill the ponds. Water depth was strictly maintained 1.4 meters. All of the selected ponds were same in construction, size and shape. It is notable that all of the studied ponds and whole culture unit were newly developed by conversion of rice field. It is also mentionable that the ponds were situated contiguously that ensured similar characteristics of soil of each pond. Three ponds were studied at a time. Study was continued up to 120 days (a typical culture cycle) from 1st January 2012 to 30th April 2012. Except this pond construction and preparation of the virgin ponds were performed carefully with scientific measures. At first the ponds were drained out. Then the ponds bottoms were fully dried up and subsequently crashed lime stones were spread on the bottom surface at the rate of 100 kg/hector. After 3 days of liming, ponds were filled with downstream water flow to the desired level and after that cow-dung was applied at the rate of 400-500 kg/hector to produce natural food. The pond depth was maintained at 1.4 meters throughout the experiment. The fries of mono-sex (Oreochromis niloticus) tilapia were collected from a local Hatchery. Collected fries were transported using oxygenated polythene bag to the pond site at the early morning and after acclimatization with pond water temperature the fries were released in the culture ponds at the density of 11 individuals/m². At the beginning of the experiment feed (Formulated feed that is collected from M.M. Aga Feed company was supplied at the rate of 20% of the body weight of reared mono-sex tilapia and gradually it was readjusted to 18%, 15%, 12%, 10%, 8%, 6% and 5% respectively in each 15 days interval (Starter, Grower). The mono-sex tilapias were fed four times a day up to 30 days, then three times daily up to 70 days and then two times (morning and evening) till the ending of the experiment. The sampling was performed according to schedule during the period of investigation notwithstanding the fact considering most of the major nutrients and parameters were measured. Water samples were taken from the surface portion of three studied ponds (during collection of sample in all ponds - same depth were maintained) for determination of different physico-chemical parameters and bottom Soil samples of the study area for the analysis of different soil parameters. Data on fish stocking density, stocking size etc. were kept during stocking. Fish growth rate in each pond were obtained by random sampling with a cast net. Fish biomass yield was calculated in situ after complete harvest.

Source of Information: J Aquacult Res Dev Volume 3 • Issue 5 • 1-5., 2012 ISSN: 2155-9546

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results of the specific study indicate that the culture of tilapia in the watershed ponds by using downstream water flow is exceedingly suitable even with the high stocking density. The resultant production was good with high profitability with less input of operational cost and reduced risk.

Knowledge Management: Journal