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Preliminary studies on the effects of three animal manures on the ecological conditions of pond water and fish growth

Establishment of a Network of Aquaculture Centres in Asia

Year of publication 1983

Pages p. 13

Author Hu Baotong, Wu Tingting, Feng Yingxue, Ding Jiayi and Guo Xianzhen;Fisheries and Aquaculture Management Division

Product type Project

Edition 1

Synopsis (short abstract) The use of organic manure in aquaculture is one of the main inputs in the Chinese system of integrated fish farming. Although many scientists in China and elsewhere have done much work on the effects of animal manure on aquaculture production (Chen Qiyu et al, 1982, Buck, 1978. 1979; Schroeder 1978, 1980; McGeacin et al, 1982; Stickney, 1977; Jhingran et al, 1980; Edwards, 1980; Zweig, 1981), little is known of the series of physical, chemical and biological processes which are taking place in a pond after application of manure. The complexity of energy recycling needs further studies. The aim of this study is to determine the independent contribution of three animal manures to changes in the ecological condition of pond water and fish production. The results to be obtained may provide the scientific basis for further research on the use of organic manure in fish culture.

Language English

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    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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