Farming freshwater prawns

4. Hatchery phase 354.1 Buildings and equipment facilities 36Basic site and building requirements 36Equipment and the distribution of water and air 374.2 Hatchery management 54Water treatment 54Starting your larval batch 55Routine work 57Feeding 60Hygiene, health and management problems 65Monitoring performance 70The greenwater system of freshwater prawn culture 734.3 Harvesting postlarvae 735. Postlarval holding and nursery phases 755.1 Basic requirements and facilities 75Holding tanks 75Indoor (primary) nursery facilities 75Outdoor (secondary) nursery facilities 76Nursery cages 775.2 Holding postlarvae before sale 775.3 Transporting postlarvae 785.4 Managing nurseries 80Indoor (primary) nurseries 80Outdoor (secondary) nurseries 82Other systems 836. Grow-out phase 856.1 Site requirements and construction 85Defining the pond 86Supplying water to the ponds 90Discharging water from the ponds 95Aeration 96Miscellaneous 976.2 Management of the grow-out phase 99Size variation 100Semi-intensive monoculture in tropical zones 100Monoculture in temperate zones 108Polyculture and integrated culture 1116.3 Feeding and fertilization 114TABLE OF CONTENTSvii