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

Production of Powder Fish Silage from Fish Market Wastes

U. Hossain
MS fellow
Department of Fisheries Technology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

A. K. M. N. Alam
Professor
Fish Processing & Quality Control, Department of Fisheries Technology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

This study was undertaken to investigate the suitability of using fish market wastes (viscera) as raw material for powder fish silage production. Fish viscera contained 14.01±0.68 % protein, 20.00±1.04% lipid, 4.75±0.64% ash, 60.62±2.15 % moisture and 0.62 ±0.08% Nitrogen Free Extract (NFE). The pH of fish viscera was 6.21± 0.07. For liquid fish silage production, 2, 3 , 4 and 5% formic acid were added in blended viscera, of which 4% formic acid was found better that had a pH value of 3.77±0.07. Liquid silage contained 12.00±0.89% protein, 17.26±1.49% lipid, 3.73±0.81% ash, 66.41±3.07% moisture and 0.60 ±0.09 % NFE. For neutralizing liquid fish silage, various concentrations, viz. 1, 2, 3, 4, 5 and 6% Na₂CO₃ were added. The pH value (6.32±0.01) was better when mixing with 4% Na₂CO₃. To produce powder fish silage 20, 30, 40 and 50 % rice bran were mixed in liquid fish silage . Powder silage made with 30% rice bran was found better to improve the nutritional quality of the product that contained 20.84±0.12% protein, 33.73±0.14% lipid, 14.05±0.27% ash, 10.83±0.19% moisture, 6.61±0.10% crude fiber and 13.94% carbohydrate . The pH value was 6.54±0.01. After preparation, powder fish silage was pack aged. The packaged powder fish silage was then stored for 4 months at room temperature ( 20 - 30 0 C ) . After four months of storage , the contents of protein, lipid, ash, moisture , crude fiber, carbohydrate and pH reached at 20.30±0.13, 32.41±0.16, 13.49±0.33, 10.98±0.28, 6.32±0.07, 16.50% and 6.76±0.09, respectively. It was found that nutritional value of powder fish silage was very high and can be used in fish feed to reduce feed cost and enhance aquaculture production.

Keywords: Fish market wastes, Powder fish silage preparation, Quality of fish feed

Location: Fish Processing Laboratory of the Department of Fisheries Technology of Bangladesh Agricultural University, Mymensingh, Bangladesh.

Start Date: 00-05-2013

End Date: 00-05-2014

Program Area: Postharvest and Agro-processing

Commodity: Fresh and processed food, Fish

Objectives:

To produce good quality of powder silage with increased nutritional value and long shelf life.

Methodology:

Duration of the study, period and place: The study was conducted for a period of 1 year from May 2013 to May 2014, in the Fish Processing Laboratory of the Department of Fisheries Technology of Bangladesh Agricultural University, Mymensingh, Bangladesh.

Preparation of powder fish silage: Fish wastes (mixed viscera of rui, catla, mrigal, tilapia and pangas) collected from fish markets were blended with an electric blender. Immediately after blending, different concentration of formic acid (2, 3, 4 an d 5%) were added. The mixture was stirred to mix acid can mix properly and then kept for several days (5, 4, 3 and 2 days with 2, 3, 4 and 5% formic acid respectively) at room temperature (25-30°C) for complete liquefaction. Now various concentration s of Na₂CO₃ (1, 2, 3, 4, 5 and 6%) were added to the liquid neutralize the pH at 6.0-7.0. Thus the liquid silage was prepared where rice bran at different compositions (20, 30, 40, and 50%) was mixed. The mixture was dried under the sun for two days. Dried product was ground in an ordinary flour mill and dried by an electric oven at 35°C for few hours so that the moisture content was adjusted to 10-12%. Powder silage thus prepared was packaged in air-tight polythene packets with packet sealing machine. Packets were clearly labeled according to existing regulations and with a sell-by or consume-by date. Packets were stored in clean and dry plastic container at room temperature for a year but shelf life of the product was rigorously monitored for 4 months.

Analytical procedures: Analysis of crude protein, lipid, ash, moisture, crude fiber and carbohydrate were carried out according to AOAC (2000) methods with slight modifications while NFE was measured by substracting the sum of total protein, lipid, ash, moisture and crude fiber from 100. The pH was measured by using a microprocessor pH meter.

Data analysis: The data obtained were analyzed and graphically presented by MS Excel 2007.

Source of Information: SAARC J. Agri., 13(2): 13-25 (2015)

Article Link (Online Journal): http://www.banglajol.info/index.php/SJA/article/view/26565/17816

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Fish viscera could be a suitable substitute for costly fishmeal in producing high quality and nutrient-rich powder fish silage. Powder fish silage could be stored up to 1 year without the loss of major nutrient components. It was found possible to partially replace expensive fish meal in fish and animal feed preparation. Powder fish silage should be tested for the growth performance of fish and other animals in farm culture condition. Research needed to be carried out on appropriate packaging of such product for local marketing.

Knowledge Management: Journal