External parasitic infestation in export guppy (Poecilia reticulata) and its quality improvement
2005
Aranya Ponpornpisit(Chulalongkorn University, Bangkok (Thailand). Faculty of Veterinary Sciences. Department of Veterinary Medicine) | Sakchai Topanurak(Chulalongkorn University, Bangkok (Thailand). Faculty of Veterinary Sciences. Department of Animal Husbandry) | Mongkol Techakumphu(Chulalongkorn Univ., Bangkok (Thailand). Faculty of Veterinary Sciences. Dept. of Obstetrics Gynaecology and Reproduction) | Jirasak Tangtrongpiros(Chulalongkorn University, Bangkok (Thailand). Faculty of Veterinary Sciences. Department of Veterinary Medicine)
Thailand guppy exportation process, and the external parasitic infestation on day one and day five of the export guppy were studied. Group and number of parasite as well as fish mortality rate were observed within ten days. Comparison of the external parasitic infestation under two different quarantine densities was done. Sodium chloride oxytetracyclin and potassium permanganate were used in order to reduce the mortality rate of the export guppy. The result showed that among the external parasites often found in ornamental fish, monogenetic trematode was only one group of the external parasite that could be found in Thailand export guppy during the study period. The infestation rate within the eight samplings was highest at 85 percents and lowest at 10 percents. Keeping the fish at 20/60 liters for five days the infection rate increase to 50-85 percents where the higher density caused the higher infection rate. Mortality rate of the fish during ten days quarantine period without the using any chemical agent was 10- 70 percents. Sodium chloride and oxytetracyclin give unpredictable results while potassium permanganate at 0.5 mg/L can effectively eliminate monogenetic trematodes.
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