FT Vol.31(2)
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- ItemProcessing Chank Meat (Xancus pyrum) into Pickles(Society of Fisheries Technologists (India)Cochin, 1994)Methods have been worked out for the production of pickles from Chank (Xancus . pyrum) meat. The pickle was subjected to biochemical, bacteril)logical and organoleptic tests at different intervals of storage. The chank meat pickles packed in glass bottles and sealed air tight remained in good condition for six months at ambient temperature.
- ItemMilkfish Production and Ecology of Brackishwater Ponds Treated with Organic Versus Inorganic Fertilizers in Cochin, India(Society of Fisheries Technologists (India)Cochin, 1994)The paper deals with a comparative study of growth, survival and yield of milkfish as well as the ecological characteristics of two brackish water culture ponds (0.042 ha each), one treated with organic fertilizer (cowdung) and the other with inorganic fertilizers (superphosphate and urea). Milkfish, Chanos chanos of 6 g average weight were stocked at a rate of 4500 fingerlings ha'1 in both the ponds. Remarkably better growth of fish (238 g), 86% of survival and gross and net productions of 852 and 825 kg ha"1 respectively, were obtained after 120 days of culture from the pond treated with cowdung, than from the pond treated with inorganic fertilizers which showed a growth of only 63 g, survival of 82% and gross and net productions of 226 and 199 kg ha0, respectively during the same period. The operational economics of milk fish production from the ponds has been compared. The rate of return on operational costs works out to be 298% in the pond treated with cowdung and 3% in the pond treated with chemical fertilizers
- ItemGrowth Response of Indian Major Carps Catla catla and Labeo rohita to Formulated Diets Containing Leaf Powders as Protein Source(Society of Fisheries Technologists (India)Cochin, 1994)Search for alternative sources of protein for partial or complete replacement of fishmeal is an ongoing process, since fishmeal, which is used as the major source of protein in pelleted feed, is becoming very expensive and scarce. In the present study fishmeal was partly replaced with locally available plant leaf powders, Eichhornia crassipes (pellet E), Colocasia esculenta (pellet C) and Gliricidia maculata (pellet G) and the pelleted feeds prepared separately were fed to the Indian major carps Catla catla and Labeo rohita and the growth performance was compared with fishmeal based control diet (pellet FM) for a period of 112 days. The best growth of catla was recorded in pellet FM followed by pellet C, E and G treatments, respectively. However, rohu registered maximum growth in pellet C followed by pellet G, E and FM treatments during the experimental period
- ItemEffect of Gamma-irradiation on the Fatty Acid Composition of Salted, Semi-dried Vietnamese Scad and Bombay duck(Society of Fisheries Technologists (India)Cochin, 1994)Effect of gamma irradiation on the lipid and fatty acid composition of semi-dried Bombay duck (Harpodon nehcreus) and Vietnamese scad (Alepes mate) was studied. In both these dried fishes, c\6:0 aand cl8:1 were the predominant fatty acids and the fishes contained significant quantities of the n-3 polyunsaturated fatty acids (PUFAs}, C20,5 and ~2:b' Irradiation at a dose of 3 kGy, did not cause any alterations in the total lipid content and the overall lipid class profile in these fishes. However, in the Vietnamese scad, C18,y ~a:• and C22,6 were significantly decreased in the irradiated samples. In spite of this decrease the irradiated semi-dried scad retained 82% of the initial amount of n-3 PUFAs.
- ItemEffect of Cyclic Loading on Netting Yam Polyethylene(Society of Fisheries Technologists (India)Cochin, 1994)Polyethylene netting yam (0.75 nun nominal dia) was subjected to repeated stressing for 10, 20, 30 and 60 cycles under different loads of 5, 10 and 20 g tex·' and the remaining elongation assessed after relaxation periods of 0, 2, 24 and 48 h. Elongation for maximum load and for two intermediate values of load (37 and 74 N) were recorded. The elongation values with respect to particular load remained almost the same in tests with 5 g tex·t load. Strained specimens under all stages never reached the original value of breaking load. Statistical analysis to ascertain causative factors indicates the dependence of the amount of loading on elongation but not the other factors like number of cycles or relaxation time.