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Production Performance of Pabda (ompok Pabda) and Gulsha (mystus Cavasius) with Rohu (labeo Rohita) in Natural Pond Conditions

A. H. M. Kohinoor
Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh 2201, Bangladesh

M. M. Rahman
Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh 2201, Bangladesh

H. M. Moniruzzaman
Planning Cell, Ministry of Fisheries & Livestock, Bangladesh Secretariat, Dhaka, Bangladesh

S. C. Chakraborty
Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh 2201, Bangladesh

Abstract/ Executive Summary:

Polyculture of pabda (Ompok pabda) and gulsha (Mystus cavasius) with GIFT strain (Oreochromis niloticus) was undertaken to assess the growth and production potentials under on-farm condition during March to August 2012. Three stocking densities of pabda and gulsha were tested keeping the GIFT strain constant stocking density. Each stocking density of pabda and gulsha was considered as treatment (T) with three replications. Fingerlings of pabda and gulsha were stocked at the rate of 25,000 and 50,000; 37,500 and 62,500 and 50,000 and 75,000/ha in T₁, T₂ and T₃, respectively. In all the treatments, GIFT strain was stocked at the rate of 25,000/ha. After six months rearing, the estimated gross productions were 7175±219 kg/ha, 7355±262 kg/ha and 7687±299 kg/ha from T₁, T₂ and T₃, respectively. Analysis of variance of total production showed significant difference (p<0.05) among the treatments with higher production in T3 and lower in T₁.

Keywords: Ompok pabda, Mystus cavasius, Oreochromis niloticus

Location: Noldighi village, under Fulpur upazila, Mymensingh, Bangladesh

Start Date: 00-03-2012

End Date: 00-08-2012

Program Area: Farming System

Commodity: Fish, Fish, Fish, Fish, Fish, Fish, Fish

Objectives:

To evaluate the production performances of pabda (Ompok pabda) and gulsha (Mystus cavasius) with GIFT in on-farm management.

Methodology:

Description and preparation of pond: Nine farmer’s ponds at Noldighi village, under Fulpur upazila, Mymensingh, Bangladesh were used for the experiment for a period of six months during March to August 2012. The range of pond area was 0.10 - 0.12 ha. Ponds were primarily rain fed, well exposed to sunlight and without inlet or outlet but had facilities to provide water as and when needed from a deep tube-well using a flexible plastic pipe. Prior to the trial, unwanted fish species were removed from the ponds by using rotenone (12.50 kg/ha). After three days, ponds were treated with lime at the rate of 250 kg/ha. Before five days of stocking, the ponds were fertilized with cow manure at the rate of 1,000 kg ha^-1 . Experimental design: Three stocking densities of pabda (O. pabda), gulsha (M. cavasius) were tested. Each stocking density of pabda and gulsha was considered as treatment with three replication. The stocking density of mono sex GIFT strain (O. niloticus) in all the treatments was same. Details of species combination and stocking density are shown. Fish stocking and management: The fingerlings of pabda, gulsha and monosex GIFT strain were stocked on 1 March 2012. All treatments were subjected to the same regime of feed and fertilizer application. After stocking, in all treatments, a 30% protein containing pelleted feed (Commercial feed) were applied at the rate of 15-5 percent of estimated fish biomass twice daily at 10.00 hr and 15.00 hr. The fingerlings were fed at the rate of 15 percent of their body weight for the first two weeks and it was reduced to 5 percent on the subsequent weeks. During the culture trial, lime were applied in all the ponds at monthly interval at the rate of 50 kg/ha. Growth of fish: Fishes were sampled regularly at monthly interval with a seine net to determine growth rate as well as feed adjustment. About 50 fishes of each species were measured from each pond as sub-sample. These fishes were returned into the ponds after sampling. Environmental monitoring: Environmental parameters were measured at 10-day intervals, always at around the same hour (10.00-11.00 am.). The water quality parameters measured were temperature, transparency, pH, dissolved oxygen, total alkalinity and ammonia. Harvesting: After six months of culture period, fish were harvested by repeated seine netting followed by pond draining. Total bulk weight and number of fish from each pond were recorded. Survival and gross production of fish of each treatment was estimated. Data analysis: Data were analysed using the statistical package, Statgraphics Version 7. ANOVA and DMRT were performed to see whether treatments had any significant variation among them.

Source of Information: Bangladesh J. Fish. Res., 15-16, 2011-12: 27-36

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The overall mean value of each water quality parameter in different treatments is presented. Water temperature did not differ much among different ponds. It ranged from 24.12- 32.8°C, 24.22-33.10°C and 24.30-33.40°C in T₁, T₂ and T₃, with the mean values of 26.40±0.42°C, 26.72±0.50°C and 26.70±0.66°C, respectively. The variations in temperature among the treatment means were found similar and within the suitable range of growth of fish in tropical ponds (Rahman et al. 1982, Roy et al. 2002, Begum et al. 2003, Kohinoor et al. 2004). The aquaculture of endangered small fish like pabda (O. pabda) and gulsha (M. cavasius) with GIFT strain would add social benefit. The fish farmer would get opportunity to sell the high valued pabda and gulsha at a higher price in the market. They would get an opportunity to consume the relatively available low valued fish GIFT rather sell if there is enough opportunities. It was found that polyculture of pabda, gulsha and GIFT is feasible. The production of all three fish species were increasing. The study also revealed that the small and shallow water bodies may generously be used for small indigenous fish species (SIS) culture and indicates the feasibility of attaining a good production of the same along with GIFT strain.

Knowledge Management: Journal