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…– a reduction of 37.8 percent. Boyd, Feed efficiency and oxygen demand, Table 1 Feed-Conversion EfficiencyFeed-Conversion RatioOxygen Demand of Feed (kg oxygen/ kg feed)Oxygen Demand of Feed to Produce 1…

…Boyd, Water Temperature, Table 1 Salinity (ppt)Food energy recovered as fish growth (%) 0.5 33.4 2.5 31.8 4.5 22.2 6.5 20.1 8.5 10.4 10.5 -1.0 Table 1. Effect of salinity…

…se alejan de la óptima disminuirán el potencial de producción. Boyd, Temperatura del Agua, Tabla 1 Salinidad (ppt)Energía de alimentos recuperada como crecimiento de peces (%) 0.5 33.4 2.5 31.8…

…and pH (Table 1). Boyd, Percentage of un-ionized ammonia in waters, Table 1 pHTemperature (° C) 16Temperature (° C) 20Temperature (° C) 24Temperature (° C) 28Temperature (° C) 32 7.2…

…Boyd, Solubility of carbon dioxide (mg/l) in pure water, Table 1 Temperature (° C)Salinity (ppt) 0Salinity (ppt) 10Salinity (ppt) 20Salinity (ppt) 30Salinity (ppt) 40 1.09 1.03 0.98 0.93 0.88 5…

…is still moist. Boyd, pond preparation, Table 1 Soil pHLiming rate (CaCO3 equivalent, kg/ha) >7.5 7.0 to 7.5 500 (optional) 6.5 to 6.9 1,000 6.0 to 6.4 1,500 5.5 to…

…el fondo de los estanques mientras el suelo aún está húmedo. Boyd, preparación de estanques, Tabla 1 pH de sueloTasa de encalado (equivalente CaCO3, kg/ha) >7.5 7.0 to 7.5 500…

…and other reduced substances. Boyd, Effect of pH on hypochlorous acid:hydochlorite ion ratios, Table 1 pHHypochlorous Acid: Hydochlorite Free Chlorine Residual Needed for Disinfecting Power of 1 mg/l at pH…

…treatment rate in ponds usually is based on pond bottom soil pH (Table 1). In hatcheries, liming materials usually are dispersed into the incoming water continuously by mechanical dispensers. Boyd,…

…acidity can be a serious problem in water with total alkalinity concentrations below 20 mg per liter. Periodic liming is necessary to avoid low alkalinity in some fertilized ponds. Boyd,…

…this. The ionic forms of sulfide are not as toxic as hydrogen sulfide, whose concentration can be estimated for the appropriate pH and water temperature (Table 1). Boyd, Hydrogen sulfide…

…larger amounts of pollutants than those in developing countries. Boyd, Typical waste water constituent data, Table 1 ParameterDeveloped Nations RangeDeveloped Nations MeanDeveloped Nations RangeDeveloped Nations Mean Biochemical oxygen demand 49.00-120.00…

…concentration to control phytoplankton. Boyd, Concentration of cupric ions, Table 1 pHCupric Ion Concentration (mg/l) 5 28 6 2.8 7 0.028 8 0.00028 9 0.0000028 Table 1. Concentration of cupric…

…the appropriate coefficient from Table 1. Boyd, Velocity coefficients for the float method, Table 1 Average Flow Depth (m)Coefficient 0.25 0.64 0.50 0.67 0.75 0.70 1.00 0.71 1.50 0.74 2.00…

…is greater, the criteria may not apply. However, the Secchi disk visibility necessary to shade pond bottoms and prevent underwater weed infestations is similar almost everywhere. Boyd, Interpretation of Secchi…

…shows the classification of bottom soil organic matter concentrations for samples taken at this time. Boyd, Classification of bottom soil, Table 1 Organic Carbon (%)Comment > 15 purposes Organic soil,…

…than the total capacity of the mineral to absorb cations. Boyd, Table 1 SalinityAmmonia Removal (g/kg zeolite) 0.1 ppt (tap water) 9.0 4 ppt 0.12 8 ppt 0.10 16 ppt…

…specific conductance is illustrated in Table 1. Boyd, Concentration versus specific conductance, Table 1 Potassium Chloride Normality Potassium Chloride mg/lSpecific Conductance (µmhos/cm) 0.0 0.0 0.0 0.0001 7.5 14.9 0.0005 37.3…