These options result from the various visits of farms and sites, and from discussions with Project Director, Mr BHAKTA. They are valid for setting up the 5 pilot farms, and can be considered, too, for future farm development, but they are not a strict requirement for the latter.
Shall be between 5 and 50 ha. However, we would recommend having it not less than 10 hectares, if possible.
Keeping in mind that future development would require allocation of one “farm” (= pond) to each individual farmer, we agree with commonly chosen size of one hectare per pond, for easy management.
One batch of pre-grown shrimps should be enough for stocking of one grow-out pond, considering the sequence below :
| Number prawns | |||
|---|---|---|---|
| GROW-OUT 10,000 m2 | Final density | 5/m2 | 50,000 |
| Initial density | 7/m2 | 70,000 | |
| PRE-GROWING 1,200 m2 | Final density | 60/m2 | 72,000 |
| Initial density | 100/m2 | 120,000 |
The pregrowing pond area shall thus be about 1 200 m2. Duration of pregrowing phase is one to two months, depending of the age of the post-larvae, and of the temperature. Considering that part of the PL will be caught from the wild at an older stage than P15, and thus directly stocked into grow-out ponds a minimum ratio of 1 PG pond for 4 GO ponds will be sufficient.
