Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Species Suitability for Small Indigenous Species (sis) of Fish Farming in Carp Polyculture Ponds Under Drought Prone Area

Md. Harun-Ur-Rashid
Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh

Md. Akhtar Hossain
Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh

Md. Mostafizur Rahman Mondol
Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh

S.M. Nurun Nabi
Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh

Md. Abu Sikendar
Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh

Md. Anwar Hossain
Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh

Abstract/ Executive Summary:

Reduced culture period with a lack of guidelines in selecting appropriate species are major constraints for the promotion of small indigenous species (SIS) based carp polyculture in ponds under drought-prone areas. In order to address this issue, an experiment was conducted to determine the suitable species for farming SIS fishes in carp polyculture ponds in Rajshahi district, Bangladesh. Three different species of SIS fishes were tested under three treatments (T₁, Heteropneustes fossilis; T₂, Clarias batrachus; T₃, Mystus cavasius). Carp species were Hypophthalmichthys molitrix, Gibelion catla and Labeo rohita. The stocking density of SIS fishes (37050 individuals ha^–1) and carps (H. molitrix, 500; G. catla, 250 and L. rohita 250 individuals ha^–1) were the same for all the treatments. Fishes were fed 35% protein-containing supplementary feed twice a day at the rate of 6% of the biomass. Common water quality parameters were monitored monthly and found within the suitable range for fish culture. Treatment T₂ was significantly higher than others in terms of fish yield and cost-benefit ratio. Further research is also recommended to optimize the stocking density of C. batrachus based carp polyculture.

Keywords: Carp; Drought; Polyculture; Pond; SIS

Location: Rajshahi district, Bangladesh.

Start Date: 00-07-2019

End Date: 00-10-2019

Program Area: Animal Health and Management

Commodity: Carp fish

Objectives:

The specific objectives of this study were to monitor water quality and fish growth; to evaluate fish yield and economics of SIS-carp polyculture, and to recommend suitable SIS fish for carp-SIS polyculture in ponds under drought prone area.

Methodology:

Location and duration of study- The experiment was conducted for a period of 4 months from July to October 2019 in nine experimental ponds (Mean area: 0.053 ± 0.001 ha; depth: 1.39 ± 0.013 m) of Paba upazila (sub-district) under Rajshahi district, Bangladesh. Experimental ponds were well exposed to sunlight. Embankments of the ponds were high enough (0.25 – 0.5 m) to protect the runoff. Experimental design- Three different species of SIS fishes were tested in carp polyculture ponds under three treatments namely T₁: stinging catfish, Heteropneustes fossilis; T₂: walking catfish, Clarias batrachus; and T₃: Gangetic mystus, Mystus cavasius, each with 3 replications. The stocking density of SIS fishes (37050 individuals ha^–1) and carps (H. molitrix, 500; G. catla, 250 and L. rohita 250 individuals ha^–1) were the same for all the treatments. Aquatic vegetation was removed manually from ponds. Unwanted and pre-existing predatory species were removed from the experimental ponds through repeated netting. Regular liming was done at 250 kg ha^–1 as basal and 50 kg ha^–1 fortnight^–1 as periodic dose. Inorganic fertilizers (urea: 40 kg ha^–1 and TSP, triple super phosphate: 40 kg ha^–1) were used for enhancing natural feed in ponds. Fertilization was done after five days of liming. TSP was wetted overnight and spread over the ponds on the following day whereas instant application was done for urea. Wild seeds of G. catla and L. rohita; and hatchery seeds of H. fossilis, C. batrachus, M. cavasius and H. molitrix were used for stocking into the experimental ponds. Carp seeds were subjected to an overwintering process whereas seeds of SIS fishes were shifted from nursery rearing to farmer-managed grow-out ponds for stocking. SIS was fed floating pelleted feed containing 35% protein at the rate of 6% of the body weight (10% at first, 8% at second, 6% at third and fourth, 5% at fifth and sixth and 4% at rest of the fortnights). Twice daily feeding (morning and evening) was followed for all the treatments. Feed ration was adjusted through fortnightly sampling. Water quality parameters of the experimental ponds were monitored between 09:00 and 10:00 am. The temperature was recorded with the help of a Celsius thermometer at 20–30 cm below the water surface. Water transparency (cm) was measured by a Secchi disk. Dissolved oxygen (mg L^–1), pH and total dissolved solids (TDS, mg L^–1) were determined by a Multimeter (HQ 40D, HACH, USA). Alkalinity (mg L^–1) and ammonia-nitrogen (mg L^–1) were determined with the help of a HACH kit (FF2, USA). A fortnightly sampling of fishes was done to monitor growth performance and to adjust the feeding ratio. In each sampling date, 10% of the stocked fishes were caught from each pond with the help of a cast net for the study of the growth performances of fish. The examined fish- es were then immediately released into the ponds without any harm. A simple cost-benefit analysis was done to explore the economics of SIS-carp polyculture in ponds under different treatments. At the end of the experimental period, all the fishes were sold in a local market. The prices of inputs and fish corresponded to the market prices in Rajshahi, Bangladesh and were expressed in Bangladesh currency (Taka) as BDT (1 US$ = 84.24 BDT, as of October 2019). Data on both fixed and variable costs were recorded to determine the total cost. The net benefit and cost-benefit ratio (CBR) were calculated as follows (after Shang 1990): Net benefit = Total return– Total cost (investment) CBR = Net benefit / Total investment. Statistical analysis- Water quality parameters; fish growth and yield; and economics of SIS-carp polyculture under different treatments were analyzed by one-way analysis of variance (ANOVA). When a mean effect was significant, the ANOVA was followed by Duncan Multiple Range Test (Duncan 1955) at a 5% level of significance (Gomez and Gomez 1984). The percentages and ratio data were analyzed using arcsine transformed data. All analyses were performed using SPSS (Statistical Package for Social Science) version 20.0 (IBM Corporation, Armonk, NY, USA).

Source of Information: Journal of Fisheries 9(2); 2021

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Considering the water quality, yield and economics, C. batrachus was found as the best species for farming in polyculture pond. Further study is also needed to optimize the stocking density and finding out the suitable feeding strategy in C. batrachus based carp polyculture in ponds under drought-prone area.

Knowledge Management: Journal