Efficacy of Quinaldine Sulphate as an Anaesthetic for the Ornamental Carp (Cyprinus carpio) in Simulated Packaging for Long Distance Transport




High cost incurred in transporting fish in large volume of water is a major problem in airlifting ornamental fish to foreign markets. The present study was carried out to investigate the efficacy of the anaesthetic, quinaldine sulphate buffered with sodium bicarbonate on ornamental carps (Koi carps; Cyprinus carpio) in simulated packaging for air transport. Quinaldine sulphate significantly reduced the rate of oxygen consumption and the accumulation of ammonia in water. The most efficient concentration of buffered quinaldine sulphate which was responsible for the greatest reduction in accumulation of ammonia and the rate of oxygen consumption was 50 ppm. Young koi carps of 7.5 - 9.0 cm in total length anaesthetized with 50 ppm quinaldine sulphate at the density of 40% of fish body weight to weight of water ratio did not show any mortality at room temperature of 28 0C during the 40 hours of exposure time while unanaesthetized fish at the same density suffered 100% mortality-. The recovery time during the post packaging period was found to be less than 5 minutes. The present study indicates that young koi carps could be transported at higher packing densities, using the suitable dosage of quinaldine sulphate which will maximize the effective utilization of space and weight during transportation


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