Incubation and Hatching Upwelling incubators Incubation and Hatching

Incubation and Hatching • Upwelling incubators – – –

Incubation and Hatching • Stacked trays – –

Incubation and Hatching • Trough trays – –

Incubation and Hatching • Baskets – – –

Incubation and Hatching • Upwelling incubators – Loadings • – Green eggs • • – Eyed eggs • • – Hatching •

Incubation and Hatching • Heath trays – Green eggs • – Eyed eggs • – Hatching •

Incubation and Hatching • Egg development/incubation – Factors affecting development • • •

Incubation and Hatching • Problems – Fungus • • – Siltation • • – Cripples/deformities • • – Soft-egg syndrome

Incubation and Hatching • Treatment methods – Bath treatments • • – Drip method • • – Chemicals used • • •

Incubation and Hatching • Preventive methods – Sanitation – First feeding • • – Trough loadings: • •

Fry stage • Important life stage – – –

Fry stage • Care – Containers • • – Loadings • – Feeding • • – Inventory • •

Fry stage • Problems – Non-infectious diseases • • – Infectious diseases • • •

Fingerling and grow-out stage • Growth rates – – • Care • Problems – – • Treatment/prevention – Bacterial – Viral – Parasitic

Harvest • Intensive culture systems – Raceways • • • Grading

Harvest • Intensive culture systems – Ponds • • • – Cages/net pens • • •

Processing – Species specific • • – Equipment • • – Hauling • •