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Seasonal Variation of Proximate Compositions and Mineral Contents (ca and P) in Head-on Giant River Prawn, Macrobrachium Rosenberg/i (de Man, 1879)

M. ABDUL SALAM
Department of Zoology, Jahangirnagar University, Savar, Dhaka, Bangladesh.

M. KAMRUJJAMAN
Department of Zoology, Jahangirnagar University, Savar, Dhaka, Bangladesh.

MD. KA.WSER AHMED
Department of Zoology, Jahangirnagar University, Savar, Dhaka, Bangladesh.

M. ABDUS SALAM
Department of Zoology, Jahangirnagar University, Sauar, Dhaka, Bangladesh.

Abstract/ Executive Summary:

The nutritive values of giant river prawn fluctuate from season to season. The maximum level of moisture content in head-of Macrobrachium rosenbergii was recorded in summer (77.27 ± 0.06 g/100 g) while the mini mum was in winter (73.34 ± 0 .75 g/100 g); the protein content was maximum in winter (19.79 ± 0.32 g/100 g), while the minimum was in summer (16.45 ± 0.18 g/100 g); the fat content was maximum in winter (4.33 ± 0.13 g/100 g), while the minimum was in autumn (1.02 ± 0.02 g/100 g), the ash content was maximum in autumn (7.33 ± 0.12 g/100 g) and the minimum in winter (6.25 ± 0.03 g/100 g), the calcium content was maximum in autumn (2776.00 ± 8.12 mg/100 g) while the minimum in winter (1662.67 ± 16.17 mg/100 g) and the phosphorus content was maximum in winter (213.33 ± 5.77 mg/100 g) while minimum in autumn (145.00 ± 5.57 mg/100 g).

Keywords: Seasonal variation, Proximate composition, Mineral contents, Giant river prawn

Location:

Start Date:

End Date:

Program Area: Knowledge Management

Commodity: Prawn

Objectives:

To evaluate the proximate composition of freshwater prawn and to scrutinize the variations of nutritional value in whole freshwater prawn at different seasons.

Methodology:

Sample collection and preparation: The giant river prawns were procured from the Dhaka New Market in three major seasons (Summer, Autumn and Winter). The specimens were identified in Limnology and Fisheries Biology Research Laboratory of the Department of Zoology, Jahangirnagar University. Proximate compositions: In the laboratory, all samples were washed in clean cold water, degutted and then preserved in refrigerator . These samples were used later to study proximate composition and mineral content analysis . The estimation of moisture, protein, fat, ash, calcium and phosphorus were done following AOAC method.'3 Statistical analysis: Correlation coefficients between different proximate compositions and mineral contents were done by Pearson Correlations using SPSS Program (Version - 6.0). Seasonal effects on proximate compositions and mineral contents were analyzed by ANOVA using MS Excel Program (Version - 5.0).

Source of Information: Dhaka Univ. J. Biol. Sci. 16(2): 125-129, 2007 (July)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The maximum level of moisture content in head-of Macrobrachium rosenbergii was recorded in summer (77.27 ± 0.06 g/100 g) while the mini mum was in winter (73.34 ± 0 .75 g/100 g); the protein content was maximum in winter (19.79 ± 0.32 g/100 g), while the minimum was in summer (16.45 ± 0.18 g/100 g); the fat content was maximum in winter (4.33 ± 0.13 g/100 g), while the minimum was in autumn (1.02 ± 0.02 g/100 g), the ash content was maximum in autumn (7.33 ± 0.12 g/100 g) and the minimum in winter (6.25 ± 0.03 g/100 g), the calcium content was maximum in autumn (2776.00 ± 8.12 mg/100 g) while the minimum in winter (1662.67 ± 16.17 mg/100 g) and the phosphorus content was maximum in winter (213.33 ± 5.77 mg/100 g) while minimum in autumn (145.00 ± 5.57 mg/100 g).

Knowledge Management: Journal