Study On Transportation Techniques And Equipments Of Live Aquatic Products

1Study on the oxygen consumption rate of common marine animals1．1Diurnal rhythm of oxygen consumption and effects of body weight and watertemperature on oxygen consumption rate of SparusmacrocephalusThe diurnal rhythm of oxygen consumption and effects of body weight andtemperature on oxygen consumption rate of Sparus macrocephalus were examinedunder a flowing-water apparatus. The results revealed that the oxygen consumptionrate of S·macrocephalus exhibits an increase with the rise of water temperature but adecreasewith the increment of body weight. The rate of oxygen consumption variedwith the alternation of day and night. The highest oxygen consumption rate was3.16±0.26μg·（g·min）^-1at11:00pm, and the lowestoxygen consumption rate0.74±0.59μg·（g·min）^-1at7:00am. The mean oxygen consumption rate was1.98±0.84μg·（g·min）^-1at day and1.96±0·63μg·（g·min）^-1at night. The results showedthat the change of metabolism level of S·macrocephalusis not significantly betweenday and night （n=10,t=0·034<t0·05）.1.2Study on the oxygen consumption rate and asphyxiation point of SebastiscusmarmoratusThe oxygen consumption rate, day and night fluctuation of oxygen consumptionrate, and asphyxiation point of Sebastiscus marmoratus were investigated by means ofdetermining the dissolved oxygen in flowing water. The results demonstrated that theday and night variation of oxygen consumption rates was inconspicuous（P=0.422）under the condition of8.0pH,24.5salinity and17℃, the average oxygenconsumption rate at night slightly higher than that in the daytime. The highest oxygenconsumption rate was233.04±25.36mg/kg·h, which appeared at5∶00. The relationship between the oxygen consumption rate, the oxygen consumption quantity and thebody weight could be described as QR=1433.9W-0.7077（R2=0.992, P<0.001） andQc=1.4298W0.2926（R2=0.956, P<0.001）, respectively. Water temperature couldproduce significant effects on the oxygen consumption rate. The lowest oxygenconsumption rate was found at8.0pH. The asphyxiation point dropped with theincrease of individual body weight, while the asphyxiation point of the fish with same body weight rose with the elevating of temperature.1.3Effect of temperature on oxygen consumption rate and ammonia excretion ofCsiaenops ocellatusThe oxygen consumption and nitrogen excretion of Csiaenops ocellatus（460～550g）were tested at different water temperatures（13、16、19、22、25、28℃） anddifferent salinity（16、18、21、24、27、30、34）. The results showed that the oxygenconsumption and nitrogen excretion of Csiaenops ocellatus rose as temperature; theoxygen consumption rate and ammonia excretion of different temperature wereextremely different（P<0.001）.while within16～34℃, the variety of temperaturehad no significant effect on oxygen consumption.2Study on several important transportation technology of live aquatic productsThe experiments studied several important transportation technology of fish,shellfish and shrimp. Drying carriage method experiments results show that: Thesurvival rate of Penaeus vannamei at17℃after7h was78.6%by this method andPalaemon carinicauda at10℃afte6h was85.4%. Pray drying carriage methodwas suitable for short distance transport for the two kinds of shrimps. Shower carriageexperiments results show that: when transporting Penaeus vannamei, it was fittingwhen the water temperature was controled at17℃. The survival rate of Penaeusvannamei reached93.3%by the method after44h. When transporting Palaemoncarinicauda, it was fitting when the water temperature was controled at10℃. Thesurvival rate of Palaemon carinicauda reached92.5%by the method after44h.Flowing water car carriage experiments results show that: when transporting Penaeusvannamei, it was fitting when the water temperature was controled at15℃. Thesurvival rate of Penaeus vannamei reached93.7%by the method after48h. Whentransporting Palaemon carinicauda, it was fitting when the water temperature wascontroled at10℃. The survival rate of Palaemon carinicauda reached92.1%by themethod after48h. Pray drying carriage and the flowing water carriage were suitablefor crabs transport. When the temperature was5℃it was appropriate. The survivalrates of the crabs were93.3%and98.6%seperately by the two methods. Thesurvival rates of Pseudosciaena crocea, Sciaenops ocellatus, lateolabrax japonicas，Sparus macrocephalus were over90%by the method after24h.by flowing water cartransport when the water temperature was controled at10℃. The conclusion was it was an important method to improve the survival rate of fisheries animal by themethod of reducing water body deterioration.3Study on transportation equipment of live aquatic productsThe transportation device of live shrimp developed was of the advantages ofreasonable structure, saving space, small transformation and letting off narcotic drugsto avoid shy stab each other casualties when transporting the shrimps. Thetransportation device of live crab developed was of the advantages of little quantity ofwater water, low transport mortality, long survival, easy operation, low cost, suitablefor large-scale promotion and so on. The long distance transport vehicles in vivodeveloped was of the advantages of long transit times and real-time monitoring ofwater status, which can be adjusted through the alarm signal in time. Oxygencylinders followed by oxygen and water blender can improve the efficiency of waterof dissolved oxygen.4Transporation specifications and standards of live aquatic productsDuring the period of transporting live aquatic products, the technical operationsrelated was ascertained. Technical specifications of marine live fish shipping,technical specifications of marine live fish shipping vehicle, technical specificationsof live shrimp transportation, technical specifications of live Swimming crabtransportation were formulated.