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

Study on Optimization of Stocking Density of Climbing Perch (anabas Testudineus, Bloch 1792) in Marginal Farmer Earthen Ponds

Md. Abdul Halim
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

MM Nabi
Deputy Director, Bangabandhu Academy for Poverty Alleviation and Rural Development (BAPARD), Kotalipara, Gopalgonj-8110, Bangladesh

S Nahar
Director, Bangabandhu Academy for Poverty Alleviation and Rural Development (BAPARD), Kotalipara, Gopalgonj-8110, Bangladesh

Abstract/ Executive Summary:

The present study was carried to optimize the stocking density of Vietnamese koi (Anabas testudineus) in marginal farmer earthen ponds in Kotalipara Upazilla under Gopalgonj district Bangladesh out from April to July 2015. Three stocking densities (treatments) were compared: ponds with 300, 350 and 400 individuals per decimal. All treatments (T1, T2 and T3) were randomly imputed and in duplicate. SGR (%) value (2.01) was recorded in T1 and the lowest (2.01) in T3. The survival rates were 90±.20, 85±0.38 and 80±0.15 for T1, T2 and T3 respectively. The FCR was 1.5±0.30, 1.75±0.35 and 1.85±0.14 in T1, T2 and T3 respectively. The highest production was 6669.00 kg/ha in T1, followed by T2 (6246.63 kg/ha) and T3 (6086.08kg/ha) respectively. The highest benefit or net return for T1 Tk. 325941.40/ha and BCR of 1.54 followed by Tk. 146172.13/ha and BCR value of 1.22 in T2 and Tk. 96171.92/ha and BCR value of 1.13 in T3. The stocking density of 300 individuals per decimal was the most profitable system. More research will be needed to further optimize stocking density of Vietnamese koi in marginal farmer earthen ponds.

Keywords: Stocking density, Optimization, Vietnamese koi, Marginal farmer

Location: Kotalipara Upazilla under Gopalgonj district Bangladesh

Start Date: 00-04-2015

End Date: 00-07-2015

Program Area: Animal Health and Management

Commodity: Fish

Objectives:

For this purpose this experiment has been undertaken to optimize stocking densities of A. testudineus in marginal farmer earthen ponds. So that farmers achieve more knowledge about stocking densities and obtain more profit.

Methodology:

Experimental site and pond facilities The present experiment was carried out for a period of 120 days from April to July 2015, in nine experimental ponds have been located in nine villages in Kotalipara Upazilla (located at 22.9833°N 89.9917°E) under Gopalgonj distract. The ponds were same in size (30±0.15 dec.) and similar in shape and depth. 2.2 Pond preparation The ponds were drained out completely and aquatic weeds were removed manually. Liming was done in all ponds at the rate of 1 kg/decimal. Four days after liming the ponds were manured with cow dung at the rate of 2 kg/decimal. One week after liming the ponds were filled with water and fertilized with urea and TSP at the rate of 100 gm/decimal and 50 gm/decimal respectively. TSP was soaked overnight, then urea and TSP were dissolved together and spread manually on pond water surface at sunny day (10-10.30 am). 2.3 Collection of experimental fish and stocking All the tilapia fingerlings with mean initial weight of 9±0.15 g were collected from Sarnolata Agro Fisheries Ltd hatchery, Sadar Mymensingh and stocked densities for were compared: ponds with 300, 350 and 400 individuals per decimal. 2.4 Experimental design The experiment was carried out with three treatments (T1, T2 and T3) each with three replications. 2.5 Feeding Fertilization was done weekly in the ponds of all treatments at the same rate (cow dung, 1 kg/dec; urea, 100g /dec and TSP, 50 g/dec). Supplemental feeds (commercial pellet floating Mega feed containing 30% protein) were given in all treatments. The feed was applied at the rate of 20% of the body weight of fishes at the beginning of the experiment and then it was reduced to 15% after one month and 10-3% after periods. Feed was applied twice a day, half in the morning (9.00 am) and the rest in the afternoon (4.00 pm). The feeds were gently thrown over the ponds water on a particular site of the ponds regularly. 2.6 Sampling Five percent of the total fish were sampled at 15 days interval by a cast net to monitor the fish growth and to adjust feeding ratio. The weight of fish during sampling was measured by using a portable digital balance. 2.7 Water quality parameters Physico-chemical parameters of pond water were monitored every 15 days interval between 9.00 and 10.00 h. Water temperature was recorded using a Celsius thermometer and transparency (cm) was measured by using a Secchi disc of 20 cm diameter. Dissolved oxygen and pH were measured directly using a digital electronic oxygen meter (YSI, Model 58, USA) and an electronic pH meter (Jenway, Model 3020, UK). Total alkalinity was determined by titrimetric method. Total ammonia of water samples was determined with the help of a Hach Kit (Model DR 2010, USA). 2.8 Economic analysis An economic analysis was carried to estimate the net profit from different treatments. The analysis was based on local market prices for harvested fish and all other items. The costs of fingerlings, fertilizer and supplemental feeds are shown in Table 3. The cost of leasing ponds was not included in the total cost. An additional 7.5% on total cost was included as operational cost. The net return was measured by deducting the gross cost from the gross return per decimal. The benefit cost ratio was also measured as a ratio of net benefit to gross cost. 2.9 Statistical analysis Computer analysis of the data was done by using MS excel, SPSS (Statistical Package for Social Science) version-20. Significance was assigned at 0.05% level.

Source of Information: Journal of Entomology and Zoology Studies 2017; 5(3): 833-837

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present study indicated that comparatively highest production was found in treatment T1 which received lower stocking density (300 fish/dec). From the research it might be suggested that the farmers should maintain stocking density. Because it is very important for any fish culture. The more study will be needed to optimizes stocking densities of Vietnamese koi at marginal farmer earthen ponds.

Knowledge Management: Journal