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Evaluation of Nutritional Status of Small Indigenous Fish Species Under Climate Change Found in Northern Region of Bangladesh

Md. Mirazul Islam
Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh

Md. Tanvir Abedin
Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh

Md. Azizul Haque
Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh

Sharika Hayder
Department of Horticulture, Sher-e- Bangla Agricultural University, Dhaka-1207, Bangladesh

Md. Niamotullah Sujon
Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh

Md. Ashraful Alam
Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh

Md. Abu Sayed
Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh

Abstract/ Executive Summary:

The present study was conducted on small indigenous dry fish for evaluating proximate composition viz ash, protein, total sugar, fibre, fat, phosphorus, sulfur and sodium content. Three species were used such as Puti (Puntius sophore), Mola (Amblypharyngodon mola), and Darkina (Esomus danricus). Our study showed that there was a little variation in the nutrients and mineral content of Mola, Puti and Darkina fish collected from different northern regions of Bangladesh. Puti fish shows good nutrients in all districts except sodium and phosphorus in the Dinajpur district. In the case of Mola fish the protein, total sugar and fiber content are slightly higher in Bogura, Rajshahi and Dinajpur districts respectively, whereas the phosphorus content is slightly higher in Dinajpur district compare with other districts. From the analysis of Darkina fish, it was found that ash content in Dinajpur is slightly higher than in other districts. The ash content of the dried fishes obtained was in the range of 14.30 to 18.65% and the highest value obtained from Darkina (Esomus danricus) and the lowest from Puti (Puntius sophore). The protein content was found in the range of 41.59 to 61.96% with the highest value in Mola (Amblypharyngodon mola) and the lowest in Darkina (Esomus danricus). There was a variation in total sugar content which is in the range of 1.61 to 2.65% where the highest value in Mola (Amblypharyngodon mola) and the lowest in Puti (Puntius sophore). Fibre content was in the range of 2.17 to 8.74% with the highest value obtained from Puti (Puntius sophore) and the lowest value from Mola (Amblypharyngodon mola). The fat content was in the range of 2.17 to 7.77% with the highest value obtained from Puti (Puntius sophore) and the lowest in Mola (Amblypharyngodon mola). It is concluded that climate change, species variation, and feeding habits may be the major factors to uphold the nutrient content in SIS.

Keywords: Darkina, Mola, Puti, Proximate composition

Location: Dinajpur, Rangpur, Bogura, Naogaon and Rajshahi on the northern region of Bangladesh

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Fish

Objectives:

To investigate the nutritional status of small indigenous fish species, the availability of small indigenous fish species, and to know the impact of nutrients due to climate change.

Methodology:

Experimental fish collection- The small indigenous fish species viz Mola (Amblypharyngodon mola), Puti (Puntius sophore), and Darkina (Esomus danricus) were collected as the experimental fish from the local market of the five districts viz. Dinajpur, Rangpur, Bogura, Naogaon and Rajshahi on the northern region of Bangladesh for the study on evaluation of the nutritional status of SIS. Biochemical composition measured in the laboratory, Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur. Sampling technique- After collection, the samples were dressed by removing viscera, scales and fins properly. Then samples were washed with pure water. Properly washed fish samples were dried in the sun for a few days. Finally, the dried samples were preserved in polythene bags for laboratory analysis. Estimation method- the sun-dried samples were heated in the oven at 60° C for 72 hours in the laboratory. After heating, the heated fish samples were ground in the grinder machine properly. The fish samples were taken for analysis and try to observe the proximate composition viz ash, protein, total sugar, fibre, fat, phosphorus, sulfur and sodium content were determined by previously studied method. Statistical analysis- All data were analyzed with the IBM SPSS statistics 22. A P- the value of <0.05 was considered to indicate a significant difference between groups, and a comparison of means was made using Duncan’s multiple range test ^[22]. The results are expressed as average ± standard deviation of five replications (n = 5). Data points bearing different letters are significantly different (P<0.05)

Source of Information: International Journal of Fisheries and Aquatic Studies; 2020; 8(5): 51-58

Article Link (Online Journal): www.fisheriesjournal.com

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The result of the present study implies that despite of some little variations, SIS in Bangladesh exhibited adequate quantities of protein, fat, ash, total sugar, and minerals. The enormous number of people in Bangladesh is poor and unable to afford large fish to their daily diet due to hickey prices. In Bangladesh, fish is an important source of protein as well as minerals and vitamins. Some SIS fish are very small (<10 cm) and they are typically eaten whole. All small fish contain large amounts of calcium and phosphorous. Big fish like silver carp (Hypophthalmichthys molitrix) and rohu (Labeo rohita), which are promoted in aquaculture do not contribute significantly to calcium and phosphorous input since the bones are not eaten. However, the result of the present investigation states that the proximate composition of different small indigenous fish more or equal to other larger carp species, though the price of SIS is very lower than larger species of fish. Therefore, small indigenous fishes can play a significant role to fulfill the nutrient demand of poorer sections of people of the country. Variation in proximate composition of fish flesh may vary with species variation, season, age and the feeding habit of fish. Here the differences may be due to the difference in the fish species used. It has been shown in the present study that small indigenous fish do not differ significantly in their nutrient and biochemical compositions.

Knowledge Management: Journal