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ProjectPreliminary studies on the analysis of bacterial types in the fish ponds applied with four kinds of animal manure and the effects of manuring on the ecosystem and yield 1988
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No Thumbnail AvailableProjectEffects of different animal manures on the ecological factors and fish yield in fish ponds
Network of Aquaculture Centres in Asia
1988Also available in:
No results found.Different animal manures were used in the experiment. Fish yield of the chicken-manured pond was the highest, followed by that of the duck-manured pond, the pig-manured pond and the cow-manured pond. The factors which affected the fish yield were the inorganic nitrogen, phosphorus, and the biomass of zooplankton and phytoplankton. -
No Thumbnail AvailableProjectPreliminary studies on the effects of animal manure on bacterial disease of fish
Establishment of a Network of Aquaculture Centres in Asia
1987Also available in:
No results found.Although China has a long history of utilizing animal manure for fish farming, little is known about its effect on environmental sanitation. It is well known that animal manure fertilizes pond water and helps increase fish production. However, it may give rise to pathogenic microorganisms and parasites and cause water pollution. It has been observed that the use of animal manure increases the possibility of transfer of the parasites of pathegenes to humans. Studies have been undertaken to observ e the relationship between fish-livestock farming system and the health of human beings in the Philippines and the United States, but little is known about the effects of animal manure on bacterial diseases in fish. Freshwater fish in China suffer most commonly from bacterial diseases such as Albinoderma, Erythroderma, Furunculosis, Stigtomatosis and verticle-scale disease, caused by Aeromonas and Psecudomonas. This study deals deals mainly with the possible effect of manure application : on bac terial diseases of fish particularly caused by Aeromonas sp. and Pseudomonas sp. Also observations were made on the occurrence of these bacteria in the manure, in pond water and in fish skin mucus.
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