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Present Status of Culture Management and Production Status in Various Leased Out Fish Ponds of Rajshahi City Corporation

Sharmeen, R.
Department of Zoology, University of Rajshahi, Rajshahi-6205, Bangladesh

M. Belal Hossain
Department of Fisheries and Marine Science, Noakhali Science and Technology, University, Sonapur, Noakhali-3802, Bangladesh.

Abstract/ Executive Summary:

The present study was carried out on 20 sampling ponds at Rajshahi City Corporation during the period from August, 2004 to April, 2005. Pre-stocking, stocking and post-stocking management were taken into consideration. Pre-stocking management include removable of predatory and weed fishes, liming and use of fertilizers. Several species of fishes were stocked at different densities in the ponds. Three groups of fish seeds, namely sac fry/spawn, fry and fingerlings were stocked in the ponds. Sac fry were stocked in 4 ponds, fry in 2 ponds and fingerlings in the remaining 14 ponds at different combination. In post stocking management fertilizers were used daily, weekly and monthly. Supplementary feeds of different variety were applied daily and on weekly basis. Gross production of fry, fingerlings and marketable fishes were 2337.02±96.97 kg/ha/yr, 6065.79±849.7 kg/ha/yr and 4774.98±7115.36 kg/ha/yr respectively. Stocking of wild fry should be avoided. Farmers should focus more on following the scientific culture management. In winter feeding rate should be 1-2% of body weight. Partial harvest and restocking should be done in order to increasing production.

Keywords: Fish seeds, Culture management, Supplementary feeds, Fish production.

Location: Rajshahi City Corporation

Start Date: 00-08-2004

End Date: 00-04-2005

Program Area: Animal Health and Management

Commodity: Fish

Objectives:

To find out the culture management and production status of fish ponds within the Rajshahi City Corporation.

Methodology:

The study was conducted on 20 ponds belonging to 11 growers within Rajshahi City Corporation. For collecting data on various aspects of culture management and fish production status three methods were used- interview, photograph and direct observation. For collecting data both individual and group interviews were conducted. In most of the cases, a range of PRA tools were applied with different degree of effectiveness of the farmers’ information. The data were collected fortnightly from August, 2004 to April, 2005 All the collected information were accumulated and analyzed and then presented in textual, tabular and graphical forms to understand the culture management and production status of the studied ponds.

Source of Information: Int.J. BioRes. 6 (6): 53-60 June, 2009

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The present study clearly indicates that fish farmers in the Rajshahi City Corporation are showing more or less good production. Although culture management is not properly followed in all the sampling ponds, some benefits are received by the growers. Most of the fishermen were using pesticides, inorganic and organic fertilizers and supplementary feeds. In order to increase production fish farmers were applying large amount of inputs. They need to follow the scientific methods and proper doses of inputs in their ponds otherwise their ponds would be subject to eutrophication in near future, which is associated with several problems. Some pond owners were seen to stock wild fry (fry collected from natural source). Such approach should be avoided, because such stock consists of predatory and other undesirable species. In order to increase production, farmers should focus more on following the scientific culture management. Supplementary feeds should be given at the rate of 3-5% of fish body weight daily. Fishes feed comparatively less in winter. So, in the winter the rate should be 1-2% of fish body weight. Cowdung, urea and TSP should be applied at the rate of 150-200 g/daily, 3-5 g/daily and 1-2 g/daily respectively. Partial harvesting is another important step in increasing production. According to fisheries scientists, carrying capacity of 1 bigha carp culture pond is 224 kg. So, any amount more than 224 kg/bigha should be harvested and then the remaining fishes will have more chance to grow. The stocking of fry should be similar to the catching number. This harvesting and stocking process increases production.

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