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

Effect of Stocking Density of Fingerlings Production of Blackcarp Mylopharyngodon Piceus (j. Richardson, 1846) in Pond Condition

Md. Abdus Samad
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Mst. Lutfunnahar
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Sujit Kumar Chatterjee
Fish inspection and quality control officer, DOF, Dhaka, Bangladesh

Md. Ashrafuzzaman
SUFO, DOF, Panchagarh Sadar, Bangladesh

Md. Selim Reza
Department of Fisheries, University of Rajshahi, Rajshahi-6205, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted in pond condition under three treatments for a period of 60 days each with three replications to know the effect of stocking density on growth performance of fingerlings production of Black carp Mylopharyngodon piceus. Stocking density were used at the rate of 240 (T₁), 270 (T₂) and 300 (T₃) fingerlings/decimal, respectively. Initial average length and weight of M. piceus fry were 3±0.02 cm and 1.5±0.01g during stocking in the experimental ponds. The fish were initially fed with 25% protein content formulated feed at 8% of body weight and the rate was reduced to 6% gradually. The water quality variabilities were more or less similar in three treatments within the suitable ranges for aquaculture. The SGR value 3.57±0.006 was recorded in treatment T₁ while the lowest value was 3.20±0.009 in T₃. Survival rate (%) were significantly higher in T₁ (91.33±0.88) where the stocking density was low compared to those in T₂ (79.83±0.44) and T₃ (77.17±0.6), respectively. The net profit in treatment T₁ was (Tk. 475428.58±3.25) and lowest in T₃ (Tk. /ha 190138.5±6.15). The highest final weight gain, SGR%, production, net profit and cost benefit ratio were found in treatment T₁. In the present study production of M. piceus was found to be highest in lower stocking density. Therefore, it is evident that feeding with higher protein supplement with lower stocking density is effective for optimum growth of M. piceus.

Keywords: Stoking density, Growth, Production, Black carp

Location: Rajshahi University hatchery complex, Rajshahi University, Bangladesh

Start Date: 17-07-2013

End Date: 16-09-2013

Program Area: Animal Health and Management

Commodity: Carp fish

Objectives:

To predetermine and standardize the optimum stocking density for each species in order to obtain the best possible output.

Methodology:

The experiment was carried out for a period of 60 days from 17th July to 16th September, 2013 in Rajshahi University hatchery complex. Initial average length and weight of M. piceus fry 3.0±0.02 cm in length and 1.5±0.01g in weight were stocked in the experimental ponds. The experimental ponds were rectangular in shape with similar size, depth and bottom type including water supply facilities. The average area of the ponds was 0.60 decimal (0.0024 hector). The water depth was maintained around 1.0-1.25 m. The experiment was conducted in the pond into three treatments viz. T₁, T₂ and T₃. Each experiment having three replications for evaluation of fingerlings production of M. piceus. In this experiment stocking density were 240/decimal (59280/ ha), 270/decimal (66690/ha) and 300/decimal (74100/ha) in the treatment T₁, T₂, T₃ respectively. Rotenone (19.76 kg/ha) was used for the removal of predatory and unwanted fish species. After 7 days, all ponds were treated with lime at the rate of 247 kg/ha to disinfect the water. The sources of water of experimental ponds were rainfall and deep tube-well. During the introduction of water in each experimental pond, fine mesh (2 mm) nylon net hapa was used in the mouth of the pumped water to prevent predatory fish egg, spawns, fry and adult or fry of aquatic harmful insects to inhabit their entrance. Fry of black carp were collected from private hatchery of Jessore. Before releasing the fry to the experimental pond the initial length and weight of 10 fry were recorded with the help of measuring scale and a sensitive portable electric balance (KD300kc: 0.01g-300g). The supplemental feed was given to fry at the rate of 8%, 6% in 1st and 2nd month respectively. The quantities of feed were adjusted every 15 days interval on the basis of increase in the average body weight of the stocked biomass. Half of the ration was supplied at 9.00 am and remaining half was supplied at 4.00 pm. The proximate composition of feed has been presented. Sampling was done on every fortnight interval by random sampling of 10% fry from each experimental pond by using a small net. Weight was taken with an electric balance and length was recorded with measuring board. All the collected data were recorded and finally calculated the average length and weight of fry according to treatment on each sampling day. Physico-chemical parameters like water temperature (C), transparency (cm), Dissolved oxygen (mg/1), CO₂ (mg/l), NH₃-N (mg/1), pH, Alkalinity (mg/1) of each experimental pond were measured at 15 days interval and data were recorded. Temperature was recorded by using a Celsius thermometer, transparency was recorded by secchi disc and other chemical parameters were recorded by using Hack kit box (HACK kit, FF-2, USA). A simple economic analysis was done to estimate the economic return in each treatment for experiment. The total cost of inputs was calculated and the economic return was determined by the differences between the total return (from the current market prices) and the total input cost. For the statistical analysis of data collected, one-way analysis of variance (ANOVA) was performed using the SPSS (Statistical Package for Social Science, evaluation version-15.0). Significance was assigned at the 0.05% level. The mean values were also compared to see the significant difference through DMRT (Duncan Multiple Range Test) after Zar (1984).

Source of Information: Res. Agric. Livest. Fish. Vol. 4, No. 1, April 2017: 37-44

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The fish were initially fed with 25% protein content formulated feed at 8% of body weight and the rate was reduced to 6% gradually. The water quality variabilities were more or less similar in three treatments within the suitable ranges for aquaculture. The SGR value 3.57±0.006 was recorded in treatment T₁ while the lowest value was 3.20±0.009 in T₃. Survival rate (%) were significantly higher in T₁ (91.33±0.88) where the stocking density was low compared to those in T₂ (79.83±0.44) and T₃ (77.17±0.6), respectively. The net profit in treatment T₁ was (Tk. 475428.58±3.25) and lowest in T₃ (Tk. /ha 190138.5±6.15). The highest final weight gain, SGR%, production, net profit and cost benefit ratio were found in treatment T₁. In the present study production of M. piceus was found to be highest in lower stocking density. Therefore, it is evident that feeding with higher protein supplement with lower stocking density is effective for optimum growth of M. piceus.

Knowledge Management: Journal