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Salinity &  Tilapia  Culture
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Salinity & Tilapia Culture

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2011 uog summer research apprentice program

2011 uog summer research apprentice program


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  • 1. The Beginning: Calculations
  • 2. Exchange rate Salinity R H V Inflow Rate Exchange Rate (ppt) (in.) (m) (in.) (m) (m3) (m3/min) (%) 33 27.5 0.6985 23 0.5842 0.895 0.016 2574 24 28 0.7112 24 0.6096 0.968 0.019 2826 4 27.5 0.6985 23.25 0.59055 0.905 0.01 1592 14 27.75 0.70485 24 0.6096 0.951 0.0165 2498Calculating Salinity Adjustments Target Exchange Target Calculate Inflow Total Total Exhange 3 Rate Salinity Rate(m /min) Inflow Rate(liter/min) Inflow Rate Tank # Time: Freshwate (%) (ppt) Seawater r Seawater Freshwater (m3/min) (%) 1:04p OT5 m 100 33 0.001 0.000 0.622 0.000 0.001 100 1:30p OT6 m 1600 24 0.007 0.004 7.134 3.567 0.011 1592 1:44p OT11 m 1600 4 0.000 0.01 0.000 10.000 0.010 1600.000 1:45p OT12 m 1600 14 0.004 0.007 3.504 7.007 0.011 1592
  • 3. Salinity vs. Tilapia Weight 20 y = 0.6542x - 0.1481 R = 0.981 18 y = 0.61x - 0.403 R = 0.971 y = 0.530x + 1.134 16 R = 0.980 y = 0.524x + 1.041 4Average Weight (g) 14 R = 0.969 14 24 33 12 Linear (4) Linear (14) Linear (24) 10 Linear (33) 8 6 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 July
  • 4. 4 Food Conversion Rate 3.5 3 2.5FCR (%) 33 2 24 4 1.5 14 1 0.5 0 18 20 22 24 26 28 30 32 July
  • 5. Specific Growth Rate 4.5 4.4 4.3Daily SGR in Percentages (%) 4.2 4.1 4 3.9 3.8 33 24 4 14 Salinity (ppt)
  • 6. Survival Rate 100 98 96Survival Rate in Percentages (%) 94 92 90 88 86 84 82 33 24 4 14 Salinity (ppt)
  • 7. Weight Gain 80 78 76Body Mass Gained in Grams (g) 74 72 70 68 66 64 62 33 24 4 14 Salinity (ppt)
  • 8. Feeding
  • 9. CENSORED