Remove the internal organs, gills, blood and slime.
Remove the backbone and dorsal fins by means of a sharp knife.
With the use of forceps, remove the spines at the belly cavity. This can be done easily because the spiner are superficially embedded.
Make a superficial slit along the dent of the dorsal and ventral muscles with the edge of a knife. Remove spines one after the other by inserting the pair of forceps between the segments of the dorsal and ventral muscles.
Continue removing the spines insimilar manner on the dorsal and ventral areas until all spines are eliminated.
From the dorsal portion, there are approximately 44 branching spines embedded between the muscle segments. Starting from the nape along the lateral line 22 spines are embedded and along the ventral muscles are24 spines.
Source: semi intensive pond for milkfish, DA brochure
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. Continue reading “Milkfish (Bangus) Production Part 3”