FT Vol.53(4)
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- ItemReturn to Scale and Resource Use Efficiency in Fish Production in Tripura(Society of Fisheries Technologists (India)Cochin, 2016)The study has examined resource productivity, return to scale of production and resource use efficiency of fish farming. Several factors like stocking of fish seed, application of manure, application of lime and expenditure on health management are determinants of fish production in the study area. As per the findings of MVP/MFC ratio, it can be inferred that the quantity of certain inputs viz., application of lime, use of manure and expenditure on fish health management need to be increased and some other resources i.e. the stocking of fish seed have to be reduced in order to achieve optimum output. It means strategic resource adjustment measures have to be taken care of in the farms of study area to arrive at optimum input-output combination. Lastly, the decreasing return to scale implies that there is an urgent need of use of resources at optimum levels to have higher fish production to make the state self-sufficient in fish production by vibrant utilization of the resources and effective productivity management strategies.
- ItemProximate and Mineral Composition of Freshwater Snails of Tripura, North-East India(Society of Fisheries Technologists (India)Cochin, 2016)Four freshwater snails (Brotia costula, Bellamya bengalensis, Bellamya dissimilis and Pila globosa) were assessed for proximate and mineral compositions with an aim of establishing their nutritive values. Analysis of muscle tissues showed crude protein levels from 11.18 (B. dissimilis) to 15.59% (P. globosa), moisture 65.80 (B. bengalensis) to 73.80% (P. globosa), lipid 0.82 (B. costula) to 1.15% (P. globosa), ash 3.82 (P. globosa) to 8.11% (Bellamya spp.) and carbohydrate 5.62 (P. globosa) to 11.97% (Bellamya spp.). Among the minerals, calcium content varied from 142 (B. dissimilis) to 312.50 mg% (P. globosa), phosphorus 55.39 (B. dissimilis) to 121.17 mg% (P. globosa), potassium 118.20 (B. dissimilis) to 182.28 mg% (P. globosa), magnesium 13.37 (B. dissimilis) to 21.43 mg% (B. bengalensis), iron 4.03 (B. dissimilis) to 68.64 mg% (P. globosa), copper 0.41 (B. dissimilis) to 0.84 mg% (P. globosa), zinc 1.47 (B. costula) to 2.17 mg% (P. globosa) and manganese 3.13 (B. costula) to 5.33 mg% (P. globosa). These values were significantly different (p<0.05) among the snails. Crude fibre was not detected. Mercury and arsenic were not detected in any of the samples. From this study, it is clear that freshwater snails of Tripura are rich in macro and micro nutrients needed for human body; they are safe from heavy metal contamination, hence recommended for regular consumption.
- ItemOccurrence of Faecal Indicators in Freshwater Fishes of Navi Mumbai in Retail Outlets(Society of Fisheries Technologists(India), 2016)
- ItemProximate Composition and Fatty Acid Profiling of Four Marine Fish Species of Gujarat Coast(Society of Fisheries Technologists(India), 2016)
- ItemQuality Characteristics of Yellowfin Tuna (Thunnus albacares) in the Fish Landing Centre at Cochin, India(Society of Fisheries Technologists(India), 2016)Yellowfin tuna being one of the commercially important fish species, the quality characteristics were investigated. Yellowfin tuna muscle had 23.18% crude protein and 1.52% crude fat. Tuna protein was well balanced with amino acids and the percentage ratio of essential amino acids to total amino acids was 48.2. Tuna meat was rich in docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). Saturated fatty acid (SFA), monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) contents of raw tuna were 31.19, 8.23 and 58.79%, respectively. n-3/n-6 polyunsaturated fatty acid ratio was 6.78, showing that yellowfin tuna meat is rich in n-3 PUFA. The other quality parameters like total volatile base nitrogen (TVBN) and trimethyl amine (TMA) were well within acceptable limits. Primary and secondary lipid oxidation products were also studied. The surface colour parameters and texture of yellowfin tuna meat showed that the samples used in the present study were of good quality.