Dr. Les Torrans - NC Aquaculture Development Conference

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Minimum Daily D.O., 20021412Low OxygenHigh OxygenAve. Temp3530Min. Daily D.O. (mg/L)1086425201510Mean Daily Temp. (C)250MAR MAR APR MAY JUN JUL AUG SEP OCTDate0
Daily Feed, 2002600Low OxygenHigh OxygenAve. Daily Temp. (C)3530Mean Daily Feed (lbs/acre)400200252015105Mean Daily Temp. (C)0Mar Apr May Jun Jul Aug Sep OctDate0
Page 1 and 2: Refinements in PondAquacultureLes T
Page 3 and 4: 6:208:2010:2012:2014:2016:2018:2020
Page 14 and 15: Aeration vs. Feed
Page 17: What D.O. concentrationdo catfish n
Page 23: ©2003 Les Torrans
Page 28 and 29: Torrans - Catfish Oxygen Studies100
Page 32: Torrans - Catfish Oxygen Studies100
Page 37 and 38: Roland Schmidt, Aerway Mfg. Co.,“
Page 39 and 40: P.A.S. / Wilfley-WeberSubterranian
Page 43: 5-HP 3-phasemotorDiffuser in mouth
Page 48: Aerators placed in parallel on the
Page 51 and 52: “Standard” Paddlewheel Placemen
Page 53 and 54: Paul D. DeesDillard & Co, Inc.
Page 57 and 58: Water QualityParameterNewSystemOldS
Page 59 and 60: ProductionParameterNet Yield(lbs/ac
Page 63 and 64: • 550 acre Mississippi delta farm
Page 66: The Sock-SaverSaver
Page 70 and 71: Total Cost: $8300
Page 72: Total Cost: $2300Photograph courtes
Page 75: Established CatfishSpawning Techniq
Page 79 and 80:
Effect of Dissolved Oxygen onCatfis
Page 81 and 82:
D.O. Conc. (mg/L)10.09.08.07.06.05.
Page 83 and 84:
1200Horsepower1100Limiting OxygenLe
Page 85 and 86:
1600Metabolic Rate14001200mg O2/kg-
Page 87 and 88:
1600Metabolic Rate14001200mg O2/kg-
Page 89 and 90:
Incipient Limiting Oxygen LevelO2 S
Page 91 and 92:
Incipient Limiting Oxygen LevelO2 S
Page 93 and 94:
65Drop in DO Inside Spawn (mg/L)432
Page 96 and 97:
Effect of Dissolved Oxygen onCatfis
Page 100 and 101:
Recent Developments
Page 102 and 103:
Sedimentation and Oxygen LossOld Po
Page 104 and 105:
Research ProtocolEMS• Pond water-
Page 106 and 107:
Pond Water-level Management Scheme1
Page 108 and 109:
BlueHybridChannel
Page 110 and 111:
Producing Hybrid CatfishFry: Worksh
Page 112 and 113:
Multiple-batchProductionFingerlings
Page 114 and 115:
Aquaflor ® Approved• Approved by
Page 116 and 117:
Aquaflor ® Websitehttp://www.aquaf
Page 118 and 119:
AQUAVAC-COLCOLVaccine
Page 120 and 121:
Life cycle of Bolbophorus sp.Mature
Page 122 and 123:
The “Seine-itizer”
Page 124 and 125:
In-Pond (“Heikes(Heikes”) ) Gra
Page 131 and 132:
ORGANIC PRODUCTION OFCHANNEL CATFIS
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Dr. Les Torrans - NC Aquaculture Development Conference

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