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The present study has shown that the aquaponics system provides certain environmental benefits when compared to the traditional agriculture systems. Presently, the low-cost small scale aquaponics system was standardised by Nutrient Film Technique. The water quality characteristics of Nutrient Film Technique (NFT) were stable as per the USEPA regulations. The values of the growth and weight gain features of millet and mustard plants at different days were significantly different (p<0.05). Growth rate was gradually increased significantly (p<0.01) during different culture periods. The ANOVA results revealed the recorded biochemical-values of NFT -raised organisms exhibited a less significance (p<0.04). The biochemical contents of millet plant showed significantly decreased values (p<0.03). The mean±SD values represents the NFT system plant growth exhibited an increased (p<0.05) significantly different with control. The NFT technique grown millet and mustard plants showed increased (p<0.05) significantly different with control experiment grown plants. Chlorophyll ‘a’ was high (8.17mg) in NFT and low (2.34mg) in control. Maximum chlorophyll ‘b’ content was 8.45mg in plants experiment with NFT and minimum obtained (0.84mg) in control. Carotenoid content was high 707mg in plants grown through NFT followed by low content (239mg) in control-plant. In addition, NFT system has obtained maximum number of colonies compared with control. Further investigation and implementation of alternative food systems could be a step in increasing local food production, and shifting away from the industrial global food market.

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The free amino acid - profiles of the pond-cultured giant freshwater prawn, Macrobrachium rosenbergii were evaluated. The M. rosenbergii was collected from the natural pond culture sites that showed reasonably good growth and survival of adults of male, female and stunted animals. Totally 15 amino acids were detected in normal male and female adults. Whereas 14 amino acids were detected in the stunted animals and threonine was not detected in the stunted animal. Three non-essential amino acids, four conditional essential amino acids, and eight essential amino acids were recorded in the tissues of M. rosenbergii. The aspartic acid contributed a higher value in all three tissue samples; 185.3, 138.76, and 274.09 µL/mL in male, female and stunted animals respectively. The arginine was found to be the lowest value in the male (2.5 µL/mL) and in the stunted animals (3.78 µL/mL) but in the normal male the glycine was the lowest value (2.38 µL/mL). In the normal male, tyrosine, serine, and glutamic acid were at the highest concentrations but in the normal female, the glutamic acid, Leucine, and tyrosine contributed to the higher-level amino acids. However, in the stunted one, serine, leucine, and histidine (96.98, 81.62, and 63.59 µl/ml, respectively) showed the same values as glutamic and tyrosine. The overall amount of essential amino acids was higher in female prawns than in male and stunted ones. In contrast, the non-essential amino acid content was higher in the stunted shrimp. Therefore, stunted prawns can be used as good nutritional food for human consumption.

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