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Study on Technical Aspects of Pangasius (pangasianodon Hypophthalmus) Farming in Mymensingh Region

M.S. MONIR
Scientific officer, Bangladesh Fisheries Research Institute, Freshwater Sub-station, Saidpur, Nilphamary-5310

S. RAHMAN
Scientific officer, Bangladesh Fisheries Research Institute, Freshwater Sub-station, Saidpur, Nilphamary-5310

M.R. HAQUE
Ph.D. Fellow, Dept. of Fisheries Management, Faculty of Fisheries, BAU, Mymensingh.

Abstract/ Executive Summary:

The present study was concerned with existing status of pangasius (Pangasianodon hypophthalmus) farming highlighting its technical aspects in two areas viz. Trishal and Muktagacha Upazila under Mymensingh district during March to December 2008. Needed data were collected with questionnaire by personal interviewing of the respondents. Ponds soil and water samples were collected from three categories (small, medium and large) of pangasius ponds from Trishal to determine the important chemical changes of water and soil. Only some socio-economic aspects varied between the pangasius farmers in two areas regarding their training and education levels. In the areas, about 45% pangasius farmers had leased ponds and lease value was BDT 35,000-45,000/ha/yr. In general, 92% of the pangasius farmers practiced polyculture while only 8% practiced monoculture. The average stocking density was found to be 29,574 fingerlings/ha. About 100% of the pangasius farmers used supplementary feeds for pangasius culture and the average yield of pangasius was 12,000 kg/ha/yr. Generally, there were no remarkable differences between two study areas in terms of technical aspects. The mean values of ammonia-nitrogen and phosphate-phosphorous of water and soil parameters were higher than the suitable level in the pangasius pond. Though the potential of pangasius farming in two regions is mentioned-worthy, it is currently facing a number of constraints such as, lack of quality fingerling, lack of capital, high production cost mostly for feed, proper technological knowledge and low price of pangasius. To improve the overall conditions of the pangasius farmers, it is necessary to upgrade the existing pangasius management practices through institutional initiatives.

Keywords: Pangasius, Technical aspects, Chemical changes, Constraints

Location: Mymensingh District

Start Date: 00-03-2008

End Date: 00-12-2008

Program Area: Socio-economic and Policy

Commodity: Pangus

Objectives:

To know the chemical changes of water and soil in different categories pangasius ponds highlighting the detail technical aspects of pangasius farming being practiced.

Methodology:

Study area: The most important pangasius (P. hypophthalmus) producing region “Mymensingh District” in the country was selected for the present study. It has 11 upazilas, of which, 2 pangasius producing upazilas (Trishal and Muktagacha) having abundance of pangasius farms along with a total 60 pangasius aquaculture farmers (30 farmers from each upazila) were selected for the study. Data collection and sampling methods: A combination of participatory, qualitative and quantitative methods was used for data collection. Data were collected for seven months from March to December, 2008. A traditional survey method of direct interview from the selected pangasius farmers was followed, using pre-tested questionnaire. After completing primary data collection procedure, focus group discussion with farmers and cross-check interviews with key informants were carried out to justify of previously collected data. Pangasius farmers are categorized on the basis of farm size such as, small (<0.5ha), medium (0.5-1.0ha) and large (>1.0ha) in Thishal and Muktagacha upazila. Three farms were selected to collect water and soil samples from each type of farm size. Water pH, ammonia, nitrite-nitrogen, nitrate-nitrogen and phosphate-phosphorus values were recorded at monthly interval during the study period. pH was measured with a portable pH meter. On each sampling day, 500 ml of water was collected in a clean black plastic bottle with cap from each pond very carefully without any agitation. The bottles were then brought to the Water Quality and Pond Dynamics Laboratory, BAU, Mymensingh to determine ammonia, nitrite, nitrate and phosphorus. Bottom soil samples from three different sites of the pond were collected. Then they were brought to the laboratory and kept for drying in the air. After completion of drying, the soil samples were ground and sieved by fine-mesh sieve and made ready for analysis. Prepared and labeled samples were sent to Soil Resource Development Institute (Mashkanda, Mymensingh) to analyze for the parameters of pH, phosphorus (μg/g), potassium (mg /100 g soil) and sulphur (μg/g). Data analysis: The data from the questionnaire were grouped and categorized according to the different pangasius farmers of the pangasius farming. The whole data were entered into the MS Excel program and in the tabular from in the computer. Mostly the tabular and graphical methods were used for analyzing the data.

Source of Information: Int. J. Sustain. Crop Prod. 6(1):36-42, April 2011

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the findings it may be concluded that, though the potential of pangasius farming in two regions is mentioned-worthy. It is currently facing a number of constraints such as, lack of quality fingerling, lack of capital, high production cost mostly for feed, proper technological knowledge and low price of pangasius. To improve the overall conditions of the pangasius farmers, it is necessary to upgrade the existing pangasius management practices through institutional initiatives.

Knowledge Management: Journal