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Reflexiones sobre la fertilización de estanques
https://www.globalseafood.org/advocate/reflexiones-sobre-la-fertilizacion-de-estanques/…de Secchi proporciona un índice de la claridad del agua (Tabla 1). Boyd, fertilización de estanques, Tabla 1 Lectura de disco de Secchi (cm)Interpretación 60 cm El agua es demasiado…
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Direct energy use in channel catfish production
https://www.globalseafood.org/advocate/direct-energy-use-in-channel-catfish-production/…factors used for converting fuel volumes to kilowatt hours are provided in Table 1. Boyd, Energy equivalence factors, Table 1 Gasoline (1 l) = 9.61 kWh Diesel fuel (1 l)…
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Pond bottom soil analyses
https://www.globalseafood.org/advocate/pond-bottom-soil-analyses/…no effective way of reducing pH in pond soils. Boyd, Approximate liming rates of bottom soils, Table 1 Soil pHLiming Rate (Calcium carbonate equivalent, kg/ha) 5.0-5.5 2,500 5.6-6.0 2,000 6.1-6.5…
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Toxicity of chemical substances in aquaculture
https://www.globalseafood.org/advocate/toxicity-chemical-substances-aquaculture/…to find evidence of the presence of another toxin often is a strong indicator that the pollutants caused the observed mortality. Boyd, Toxicity, Table 1 96-hour LC50 (mg/L)Estimated safe concentration…
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Toxicidad de las sustancias químicas en la acuacultura
https://www.globalseafood.org/advocate/toxicidad-de-las-sustancias-quimicas-en-la-acuacultura/…que los contaminantes causaron la mortalidad observada. Boyd, Toxicidad, Tabla 1 96-horas LC50 (mg/L)Concentración segura estimada para exposición prolongada (mg/L) Dióxido de carbono, peces de agua dulce – 20 Dióxido…
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A review of water quality improvement products
https://www.globalseafood.org/advocate/a-review-of-water-quality-improvement-products/…Boyd, water quality products, Table 1 Element mg/LElementmg/L Chloride 19,000 Fluoride 1.3 Sodium 10,500 Silicate 6.4 Sulfate 2,700 Boron 4.6 Magnesium* 1,350 Iron 0.01 Calcium 400 Molybdenum 0.01 Potassium 380…
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Salinity balance key to culture success
https://www.globalseafood.org/advocate/salinity-balance-key-to-culture-success/…per l. Boyd, Concentrations of major ions, Table 1 VariableSeawater (mg/l)River Water (mg/l) Chloride 19,000 7.8 Sodium 10,500 6.3 Sulfate 2,700 11.2 Magnesium 1,350 4.1 Calcium 400 15.0 Potassium 380…
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Una revisión de los productos de mejora de la calidad del agua
https://www.globalseafood.org/advocate/una-revision-de-los-productos-de-mejora-de-la-calidad-del-agua/…de magnesio para aumentar las concentraciones de potasio y magnesio. Boyd, productos de calidad de agua, Tabla 1 Elementomg/LElementomg/L Cloruro 19,000 Fluoruro 1.3 Sodio 10,500 Silicato 6.4 Sulfato 2,700 Boro…
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Sizes of substances dissolved or suspended in water
https://www.globalseafood.org/advocate/sizes-of-substances-dissolved-or-suspended-in-water/…detail. Boyd, substances, Table 1 ParticleLength (microns) Bacteria 0.2 – 10 Clay 0.5 – 2 Phytoplankton 2 – 2,000 Silt 2 – 50 Sand 50 – 2,000 Zooplankton 100 –…
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Tamaños de sustancias disueltas o suspendidas en el agua
https://www.globalseafood.org/advocate/tamanos-de-sustancias-disueltas-o-suspendidas-en-el-agua/…micrones) son visibles, aunque no en detalle. Boyd, sustancias, Tabla 1 PartículaLongitud (micrones) Bacterias 0.2 – 10 Arcilla 0.5 – 2 Fitoplancton 2 – 2,000 Limo 2 – 50 Arena…
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Feed efficiency indicators for responsible aquaculture
https://www.globalseafood.org/advocate/feed-efficiency-indicators-for-responsible-aquaculture/…waste per kilogram of production increases, and the percentage of recovered feed nutrients in the harvested biomass decreases (Table 1). Boyd, Relationships between feed conversion ratio (FCR) and waste production,…
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What is the role of bacteria in aquaculture ponds?
https://www.globalseafood.org/advocate/what-is-the-role-of-bacteria-in-aquaculture-ponds/Prof. Boyd: Bacteria essential for maintaining proper ecological function, adequate water quality Bacteria can maintain ecological balance in properly managed aquaculture ponds without the need for supplementation from outside sources….
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¿Cuál es el papel de las bacterias en los estanques acuícolas?
https://www.globalseafood.org/advocate/cual-es-el-papel-de-las-bacterias-en-los-estanques-acuicolas/Prof. Boyd: Bacterias son esenciales para mantener una función ecológica y calidad de agua adecuadas Las bacterias pueden mantener el equilibrio ecológico en estanques acuícolas adecuadamente manejados sin la necesidad…
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Feeding affects pond water quality
https://www.globalseafood.org/advocate/feeding-affects-pond-water-quality/…inputs of nutrients in feed than can be assimilated quickly, and water quality deteriorates. When this happens, the culture species can be adversely affected, and feed-conversion efficiency declines. Boyd, feeding,…
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Overview of mechanical pond aeration
https://www.globalseafood.org/advocate/overview-of-mechanical-pond-aeration/…are provided in Table 1. Boyd, Solubility of dissolved oxygen, Table 1 Temperature (° C)Salinity (ppt) 0Salinity (ppt) 10Salinity (ppt) 20Salinity (ppt) 30Salinity (ppt) 40 10 11.28 10.58 9.93 9.32…
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Chemical fertilizers in pond aquaculture
https://www.globalseafood.org/advocate/chemical-fertilizers-in-pond-aquaculture/…listed in Table 1. Boyd, Approximate grades of common commercial fertilizers, Table 1 FertilizerPrimary Nutrients (%) NPrimary Nutrients (%) P2O5Primary Nutrients (%) K2O Urea 45 Calcium nitrate 15 Sodium nitrate…
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Mineral salts correct ionic imbalances in culture water
https://www.globalseafood.org/advocate/mineral-salts-correct-ionic-imbalances-in-culture-water/…culture of most species. However, a report by Boyd, Thunjai and Boonyaratpalin in the June 2002 Global Aquaculture Advocate suggested that for the culture of marine species in low-salinity water,…
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Water quality standards: Dissolved Oxygen
https://www.globalseafood.org/advocate/water-quality-standards-dissolved-oxygen/…DO. Boyd, Common effects of DO concentration on warm-water fish, Table 1 Dissolved Oxygen (mg/l)Effect < 0.5 Small fish survive brief exposure. 0.5-1.5 Most species will die at exposure for…