PEMBENIHAN NILA MERAH (Oreochromis sp.) MENGGUNAKAN DARING APUNG DI WADUK KEDUNGOMBOFLOATING NET HATCHERY OF RED NILA (Oreochromis sp.)IN KEDUNGOMBO RESERVOIR

ABSTRACT: The objectives of the research were to know the production of hatchery, survival rate am rate of fry. Floating nets were made for plastic hapa (2 mm mesh size) with 3 different m2, 10 m2 and 15 m2). The larvae were stocked in different hapa nursery sizes (1 m3, 2 t m3) at the rate of 1000 larvae/m3 of water. The fry produced from the first nurses subsequently reared in vvaring (mesh size 0,04 cm) at density of 600 fry/m3 of water. The s were conducted for 6 months, while larvae rearing were 2 months for each period respe The result showed that the hatchery of 15 m2 scale were technically and biologically feasible 6 months period it produced 11,870 fingerling of 40 gram, 3,028 fry of 4 gr 4,290 of larvae. The survival rate and growth rate of fry were not significantly afft different hapa sizes either in the first and second nursery. The survival rate of the first was 64.70-72.63% of 5.0-6.8 cm fry, while the second nursery was 97.29-9830% of 1cm fry