Definition
The following are the types of management system:
1 Extensive. Refers to a system where stocking rate ranges from 3,000 pcs to 5,000 pcs/ha for milkfish. 1-15 pcs/sq.m. for shrimps. The cultured species depend completely on natural food propagated in the pond with or without fertilization and depends solely on tidal water exchange.
2. Semi-intensive. Refers to a system where stocking rate ranges from 16-25 pcs./sq.m. for shrimps and from 5,001 to 20,000 for milkfish and 40,000 to 80,000/ha for tilapia. This requires supplementary feeding of commercial pellets, trash fish, etc. aside from the natural food propagated in it. Water pumps are used aside from the tidal water and paddle wheels as aerators.
3. Intensive. Refers to a system where ponds are smaller about 1,000 to 5,000 sq m; stocking rate ranges from for 26-40 pcs/sq.m. shrimps from 20,001 to 50,000/ha for bangus. The high stocking could only be supported through major inputs such as formulated feeds mostly in pellet form. Water exchange is done through pumps and paddle wheels are also needed for aeration purposes.
