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Title: | Analysis of ration size in Nile tilapia production: Economics and environmental implications | Authors: | Poot-López, Gaspar R. Hernández, Juan M. Gasca-Leyva, Eucario |
Keywords: | Trout Oncorhynchus-Mykiss Rainbow-Trout Bioeconomic Analysis Feed-Utilization Sparus-Aurata, et al |
Issue Date: | 2014 | Publisher: | 0044-8486 | Journal: | Aquaculture | Abstract: | This article aims to identify the best management strategy for integrating technical-economic efficiency and ecological impact when a rural producer of Nile tilapia faces problems with fixed price and harvest size. A bioeconomic model was developed based on an experimental study of juvenile tilapia growth with three rations, as recommended by the feed suppliers, and a satiation ration (producer's strategies). The model included standardized rations from 0 to 1, where 0 indicates starvation and 1 satiation. Three harvest sizes and two market conditions (fixed price and size-dependent price), projecting the Net Present Value (NPV) and Total Ammoniacal Nitrogen (TAN) production of the culture rotations over 10 years were simulated. For the size-dependent price, the greatest NPV was reached for a harvest size of 300 g (ration of 0.75) and for the fixed price the recommended size was 200 g (ration of 0.67). The optimum rations are below that recommended by feed providers (0.84). With the recommended optimum ration and harvest size, TAN production can be reduced to 1.88 t (54.33%) in the same time period. (C) 2013 Elsevier B.V. All rights reserved. | URI: | http://hdl.handle.net/10553/52185 | ISSN: | 0044-8486 | DOI: | 10.1016/j.aquaculture.2013.11.005 | Source: | Aquaculture[ISSN 0044-8486],v. 420-421, p. 198-205 |
Appears in Collections: | Artículos |
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