vi IISH HAiCllKRV MANAGEMENT 



Pesticides 15 



Water Supply and Treatment 16 



Treatment of Incoming Water 16 



Temperature Control 16 



Aeration / 7 



Sterilization / 7 



Treatment of Water for Reuse 19 



Ammonia Toxicity 20 



Biological Removal of Ammonia 21 



Ion Exchange Removal of Ammonia 22 



Other Ammonia Removal Techniques 23 



Estimation of Ammonia 24 



Treatment of Effluent Water and Sludge 25 



Hatchery Pollutants 26 



Sedimentation Basins 27 



Solid Waste Disposal 30 



Hatchery Design 32 



Buildings 33 



Egg Incubation 39 



Rearing Facilities 40 



Circular Rearing Units 40 



Swedish Pond 43 



Rectangular Tanks and Raceways 43 



Rectangular Circulation Rearing Pond 46 



Earthen Ponds 47 



Cage Culture 48 



Pen Rearing 50 



Selection of Rearing Facilities 50 



Biological Design Criteria 51 



Application of Biological Criteria 54 



Bibliography 55 



2: Hatchery Operations 



Production Methods 60 



Length- Weight Relationships 60 



Growth Rate 61 



Growth at Variable Water Temperatures 62 



Carrying Capacity 63 



Flow Index 67 



Density Index 71 



Warmwater Fish Rearing Densities 75 



Largemouth Bass 75 



