Fish raised in semi-intensive, freshwater systems provide the major proportion of farmed, global production (FAO, 1995). A high proportion of this aquaculture occurs in rapidly developing Asian countries, which are also experiencing sharply increased consumption of poultry. Semi-intensive systems are usually based on ponds fertilised with livestock manure and fed with low cost supplementary feeds.
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Fish raised in semi-intensive, freshwater systems provide the major proportion of farmed, global production (FAO, 1995). A high proportion of this aquaculture occurs in rapidly developing Asian countries, which are also experiencing sharply increased consumption of poultry. Semi-intensive systems are usually based on ponds fertilised with livestock manure and fed with low cost supplementary feeds.
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