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Balance de nutrientes y respuesta Productiva de Litopenaeus vannamei en Mesocosmos con cero recambio de agua y Sustratos artificiales
| dc.contributor.advisor | Voltolina, Domenico | es_MX |
| dc.contributor.advisor | Martínez Córdova, Luis Rafael | es_MX |
| dc.contributor.author | Audelo Naranjo, Juan Manuel | es_MX |
| dc.date.issued | 2011 | es_MX |
| dc.identifier.uri | http://dspace.cibnor.mx:8080/handle/123456789/347 | |
| dc.description.abstract | es_MX | |
| dc.language.iso | es | es_MX |
| dc.publisher | Centro de Investigaciones Biológicas del Noroeste, S.C. | es_MX |
| dc.title | Balance de nutrientes y respuesta Productiva de Litopenaeus vannamei en Mesocosmos con cero recambio de agua y Sustratos artificiales | es_MX |
| dc.documento.id | cibnor.2011.audelo_j | es_MX |
| dc.documento.indice | audelo_j | es_MX |
| dc.documento.inst | cibnor | es_MX |
| dc.dirtesis.grado | Doctorado en Ciencias en el Uso, Manejo y Preservación de los Recursos Naturales | es_MX |
| dc.dirtesis.disciplina | Acuicultura | es_MX |
| dc.dirtesis.universidad | Centro de Investigaciones Biológicas del Noroeste, S.C. | es_MX |
| dc.dirtesis.facultad | Posgrado en Recursos Naturales | es_MX |
| dc.documento.fecha | septiembre, 2011 | es_MX |
| dc.description.abstracten | Litopenaeus vannamei juveniles were grown in 1000 L circular tanks in two separate 30 days experiments with zero water exchange, aiming to evaluate the effect of artificial substrates on the nutrient mass budgets, on water quality, as well as on growth, biomass yields and nutritional condition. For the first experiment we used a simple experimental design with an initial biomass of 440 g, and compared the results obtained in four tanks fed a formulated diet supplied on demand, to those of four similar cultures fed with the same diet and regime, but with the added natural food growing on artificial substrates (Aquamats). For the second experiment we used the same treatments in a 2x2 completely randomized block experimental design, with two levels of initial biomass (600 y 800 g). The production variables were better in the treatments than in the control cultures in both experiments: in the first, individual weight, final yield and survival were 4.3, 13.0 and 8.5% higher in the cultures with added substrate than in the controls, and the food and economic conversion ratios were also better by 17.8 and 22.2%, respectively. At the end of the second experiment the differences were significantly higher with both values of initial biomass: final weights were better by 12.6 and 19.7%, biomass yields by 29.9 and 42.3%, and survival by 15.1 and 22.0%. In addition, the food and economic conversion ratios were lower by close to 32.0 y 43.0%. There were no differences between the protein concentrations of the hemolymph, whereas the protein content of the shrimp muscles were close to 21% higher in the cultures with Aquamats. Additionally, the water of the cultures with Aquamats had the lower concentrations of dissolved ammonia nitrogen. The highest inputs of nitrogen and phosphorus were those of formulated food, followed by the initial biomass of juvenile shrimp. The amounts of nutrients discharged with the effluent water were lower than those given in literature for open cultures, and were significantly lower in the cultures with Aquamats. In these, the percentages of nutrients recovered as shrimp biomass were higher than in the control cultures. The amounts of nutrients retained in the sediments were significantly higher in the control cultures than in those with artificial substrates, in which close to 16.0% of the nitrogen and from 5.2 to 21.0% of the phosphorus inputs were retained as biofilm on the artificial substrates. The presence of the community of autotrophic and heterotrophic organisms of the biofilm of the artificial substrates had a positive effect on the productive response of the cultures, on shrimp growth and on its physiological condition, as well as on water quality during the production process. | es_MX |
| dc.documento.subject | L. vannamei; Balance de nitrógeno; Balance de fósforo; Biopelícula | es_MX |
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