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

Proximate Composition and Microbial Quality of Three Imported Aquarium Fish Feeds in Bangladesh

Md. Alamgir Kabir
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka-1000, Bangladesh

Mohammad Shamsur Rahman
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka-1000, Bangladesh

Anwar Hossain
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka-1000, Bangladesh

Shankar Chandra Mandal*
Department of Fisheries, Faculty of Biological Sciences, University of Dhaka, Dhaka-1000, Bangladesh

Abstract/ Executive Summary:

Proximate composition and microbial quality of three aquarium fish feeds commonly found in Bangladesh were collected from fish feed market of Dhaka city. Significantly higher moisture content (2.12 ± 0.06%) was found in Super Nova ^TM fish feed while similar moisture content was detected in other two feeds (p<0.05). On the other hand ash content detected in Optimum^TM and Osaka 2000 ^TM aquarium fish feed was significantly higher than that of Super Nova^TM (10.67±0.19%) (p<0.05).Protein content found in Optimum^TM (42.21 ± 0.12%) was significantly higher than that of Osaka 2000 ^TM and Super Nova^TM (p<0.05). However, similar lipid content was found in Optimum ^TM (1.06 ± 0.03%) and Super Nova^TM (1.13 ± 0.01%) aquarium fish feed which were significantly higher than that of Osaka 2000 ^TM (p<0.05). The Escherichia coli and Staphylococcus aureus were found in all feeds. However Vibrio sp was not found in any feed. Total bacterial count was significantly higher in Osaka 2000 ^TM feed than that of others (P<0.05). However S. aureus was significantly higher in Super Nova^TM than that of others while E. coli count was significantly higher in Optimum^TM fish feed than that of others (p<0.05). Nutritional quality of the aquarium fish feed was qualified to some extent to meet the minimum requirement of the aquarium fish while microbial quality indicates some degrees of deterioration which may cause diseases of the aquarium fishes. Thus proper storage condition, hygienic handling and processing should be maintained to prevent the microbial contamination in aquarium fish feeds. There should be a monitoring cell from the government to assess the quality of this expensive imported feeds for aquarist.

Keywords: Biochemical composition, Microbial quality, Aquarium fish feed

Location: Aquarium fish feed market in Kataban, Dhaka

Start Date: 00-06-2014

End Date:

Program Area: Quality and Nutrition

Commodity: Aquatic animal

Objectives:

To assess the biochemical composition and microbial quality of aquarium fish feed commonly found in Bangladesh.

Methodology:

Collection and preparation of samples: Three commercial aquarium fish feed samples of Super Nova TM , Osaka 2000 TM and Optimum TM were obtained from the aquarium fish feed market in Kataban, Dhaka in June 2014. They are all imported. Various information labeled in the three aquarium fish feed and the biochemical composition as labeled by the manufacturer have shown. The biochemical composition and microbial quality of the samples were analyzed in the laboratory of Department of Fisheries, University of Dhaka by using Standard methods. For the determination of moisture content, the initial weights were taken first and then samples were dried in an oven at about 105 ºC for about 10 to 18 hrs until a constant weight was reached and cooled in desiccators and weights of the samples were taken again. Ash content was estimated as inorganic residue left over after the organic matter has been burnt away at about 600-700 ºC. The sample was first burnt on a flame until it became charred and then in muffle furnace at about 600-700 ºC till the residue become white. The percentage of nitrogen in the sample was calculated as % of Protein = {(S-B) × 2.9 × Moisture factor}/Weight of sample; where, S = Titration reading for sample, B = Titration reading for blank and Moisture factor = (100-Moisture content)/100. Then 5-10 mL of the extract was taken in 25 mL beaker and allowed to air dry and then dried in an oven at 60 ºC for the determination of total lipid was determined gravimetrically. Nutrient agar was used to determine the total bacterial count. One gram sample was taken in 9 mL sterile normal saline to prepare a 10 -1 dilution. For the isolation and enumeration of S. aureus, 100 µL serially diluted samples was spread onto the manitol salt agar plates and incubated at 37 °C for 18 to 24 hours. Golden colonies were counted as S. aureus. The means of different parameters were compared using ANOVA followed by Tukey’s post hoc for multiple comparisons. Statistical software SPSS version 20 was used to analyze the data with the level of significance at p<0.05.

Source of Information: Bangladesh J. Zool. 42(2): 283-294, 2014

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It has been found that nutritional quality and microbial load of the examined fish feeds differed with the values supplied by the manufacturer. Aquarists get losses by using these types of feeds in rearing ornamental fishes. Thus, government should take proper initiative in quality control for the benefit of the aquarium fish industry in the country.

Knowledge Management: Journal