- Purchase the required fry once every year of operation, especially during the peak season in May.
- Start production in the nursery pond, then the transition pond, formation pond, and finally the rearing pond.
- Divide the grow-out process into two phases: formation and rearing phases.
- Allow the fingerlings to grow from a 20g fingerling size to a 50g post-fingerling size in the formation pond using natural food organisms as primary food for the stock.
- Transfer the post-fingerlings to the rearing pond. Milkfish will grow to the marketable size of 250g in three months at an average growth rate of 2.2g/day . Expect the milkfish to grow bigger during the dry season at an average growth rate of 3g/day.
- Provide supplementary feeds to sustain fish growth particularly during the wet season when lab-lab and other natural foods in the pond are depleted. A weekly feed conditioning is necessary to determine the attractability of the feed.
- Efficient feeds should be used. Unattractive feeds results in poor health of the milkfish.
- Eradicate snail pest called suso and bangungon. These pests destroy lab-lab mat and compete with bangus for lab-lab. Use alternative molluscicide, like tobacco dust, applied at 300-400 kg/ha. Or collect the snails by sweeping or handpicking and burn them with rice straw.
Pond water management
- Increase water depth from 0.6 m to 1 m particularly during the last two months of culture operation. Note: An abrubt increase in water depth will cause lab-lab to detach and float. Install fine-meshed screens (bastidor or lumpot) at the gates to prevent the re-entry of wild species or the possible escape of stock.
- Monitor water quality parameters (turbidity, salinity, dissolved oxygen, temperature regularly to check for any sign of risk. Maintain the optimum water condition to support maximum growth of milkfish.
- Change water at least every two weeks or as frequent as possible.
- Install a stand-by water pump to maintain desired water depth when water management through tidal fluctuation is not possible.
|Nursery Pond||40 fry/sq m|
|Transition pond||5 fingerlings/sq m|
|Formation Pond||2 juveniles/sq m|
|Rearing Pond||1 grown fish/sq m|
Milkfish production schemes
|Pond||Growing stage(wt-g)||Culture period(days)||Growth rate(g/day)||Food type||Harvest size(pc/kg)|
|Transition pond||0.5-10||30||0.32||Lab-labBread crumbs||100|
Milkfish production schemes
|Pond||Growing size(g)||Feed Type||%Feed rate(biomass)||Feeding frequency|
|Nursery Pond||0.02-05||LablabStarter mash||8-10||5x /day|
|Transition pond||0.5-10||LablabBread crumbs/rice bran||5-8||4x /day|
|Formationpond||12-50||LablabBread crumbs||4-5||3x /day|
|Rearing pond||50-100100-250||Lablab / algaeFinisher pellets||3||3-4x/day|
Nutrient requirements of Milkfish Feed
|Crude protein||25-40%||Fish meal, soybean, corn, gluten meal, ipil-ipil|
|Crude fat||7-10%||Vegetable and fish meal|
|Nitrogen Free extract||25%||Yellow corn, cassava meal|
|Vitamins, minerals mix||3-6%|
Water quality parameter
|Dissolved oxygen concentration||3-5 ppm|
|Temperature||22-35 degrees Celsius|
|pH level||6.8 -8.7|