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Growth and Economic Performance of Different Supplementary Feed on Female Mud Crab (scylla Olivacea) Fattening in Plastic Box

Kumar Prasun Das
Department of Fisheries and Marine Bioscience, Faculty of Biological Science and Technology, Jashore University of Science and Technology, Jashore-7408, Bangladesh

Subrata Mondal
Department of Fisheries and Marine Bioscience, Faculty of Biological Science and Technology, Jashore University of Science and Technology, Jashore-7408, Bangladesh

Abdulla-Al-Asif
Department of Animal Science and Fishery, Faculty of Agriculture, Science and Technology, Universiti Putra Malaysia, UPM Bintulu Sarawak Campus, P.O. Box 396, Jalan Nyabau, Bintulu, Sarawak, Malaysia

Abstract/ Executive Summary:

The present study was conducted to identify low cost feed for female mud crab (Scylla olivacea) fattening practice in plastic box and the effect of different feeds on growth and survival rate of mud crab. A number of 30 adult non-gravid female crabs were reared into rectangular shaped plastic boxes, each box containing one crab. Three types of feed such as Chicken intestine, Tilapia and Apple Snail meat were supplied as feed at 10% of body weight of the crabs once daily considered as Treatment-1, Treatment-2 and Treatment-3 respectively with 10 replications each to compare the fattening system.. The crabs in plastic boxes were floating into water to fatten for 10 days. Survival rate of crab was found 100%, 90% and 100% respectively in chicken intestine, tilapia and apple snail meat. In the experiment food conversion ratio (FCR) and specific growth rate in weight (SGRw) were varied significantly among different foods (P >0.05). Comparative benefit-cost analysis showed that use of chicken intestine as feed in crab fattening attained higher net profit than crab fattening used tilapia and apple snail s feed from 7-12 days fattening period The present study revealed that utilization of chicken intestine as feed for mud crab fattening might be better than any other feeds and cost effective in Bangladesh.

Keywords: Mud crab; Fattening; Plastic box;

Location: Bahadurpur village of Kullya union near Budhhata bazar of Assashuni upazila of Satkhira district, Bangladesh

Start Date: 22-04-2018

End Date: 01-05-2018

Program Area: Animal Health and Management

Non-commodity: Income generation

Objectives:

1. To encounter the effect of different food types on female mud crab fattening in plastic box;

2. To find out low cost feed for female mud crab (Scylla Sp.) fattening practice; and

3. To evaluate the economic performance of female mud crab for each feed types during fattening.

Methodology:

This study was conducted at Bahadurpur village of Kullya union near Budhhata bazar of Assashuni upazila of Satkhira district, Bangladesh during April 22, 2018 to May 1, 2018. The fattening period of female mud crab was 10 days. Three types of food (tilapia, snail meat, chicken intestine) were given at 10% of the body weight. There were 3 treatments in the experiment. Each treatment had 10 replications. 30 pieces of identical plastic box were used for the experimental trial. A total of 30 immature female mud crabs were brought from the local crab collectors. All food was chopped to match the desired amount for each treatment and was given as live food. Feed was given daily at the around 11:30 AM. Water quality parameters such as pH, salinity, temperature, DO were measured during stocking and every day at 11.30 AM during the study period. Water temperature, pH, salinity and DO were measured by thermometer, pH test kit (Bio pH) refracto-meter and titration method respectively. Maturities were tested by traditional light method (sunlight or torch light) after 5 days and continued until gonad of female mud crabs developed fully. Survival rate was estimated in percentage using the formula (SR, %). The survival rates examined based on Jobling (1995). Growth performance of the mud crab was evaluated using the following parameters average weight gain, percent weight gain, Specific growth rate (SGR), measurement of the increase in carapace width (CW) and total weight gained (TWG) for the different weight groups of crabs was calculated based on Tacon (1990) and De Silva and Anderson (1995). To evaluate economic efficiency of the culture system, income and cost was compared. Gross revenue and net return were calculated according to Cholik and Hanafi (1992). All data were analyzed using SPSS (v.16) and Microsoft office excel packages (Office 2013). One-way analysis of variance (ANOVA) was applied to find significant differences between treatments with respect to survival rate and growth rates. Pearson’s Correlation was done to find out relationship between survival rate and production.

Source of Information: Asian J. Med. Biol. Res. June 2019, 5(4): 303-315

Article Link (Online Journal): DOI: https://doi.org/10.3329/ajmbr.v5i4.45269

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Present study indicates the utilization of waste as feed for crab fattening practice and reveal potentiality of chicken intestine. From the results of this study, it may be concluded that usage of chicken intestine as feed for fattening of mud crab in plastic box might be better than that of tilapia or apple snail meat as feed. This result might be helpful to reduce the traditional fattening method and motivate the people to adopt the scientific method as well as introducing inexpensive feed. Economic analysis from the present study showed that female mud crab fattening in plastic box can be economically viable through its higher profitability with low cost of investment. Further studies should be done to analyze the quality of meat of crab by feeding chicken intestine as feed and effect of this by product on human health.

Knowledge Management: Journal