Yield and Economic Efficiency of Green Water in Combination with Supplemental Feeds for Artemia Production in Vietnamese Salt Ponds |
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Authors: | Nguyen Thi Ngoc Anh |
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Affiliation: | 1. College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnamntnanh@ctu.edu.vn |
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Abstract: | We evaluated the combined effects of different green water sources and feed supplements on Artemia biomass production and economic efficiency. A two-factor experiment was set up with two green water types produced from the ratios of nitrogen and phosphorus (N:P = 5 and N:P = 10) in combination with two types of supplemental feed (rice bran or pig manure). After 12 weeks of culture, total Artemia biomass yield with the N:P = 5 treatment (2.29 ton ha?1 crop?1) was 14% higher than that with the N:P = 10 treatment (1.97 ton ha?1 crop?1), although this difference was not significant (P > 0.05). There was no significant interaction between green water and supplemental feeding treatments for the final yield of Artemia biomass. Comparative cost-benefit analysis showed that the treatment of N:P = 5 combined with pig manure attained a significantly higher net profit and cost/benefit ratio than the other treatments. |
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Keywords: | Artemia biomass economic efficiency N:P ratio pig manure rice bran |
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