each stocking density. Using a wate

each stocking density. Using a water flow through fish culture system,
water depth was maintained at 20 cm (i.e. 18 litres) level daily. The post
fry were fed to satiation 4 times (7 am, 10 am, 1 pm and 4 pm) daily
with the commercial catfish feed.
During the experiment, leftover feed and wastes were siphoned out
twice daily, in the morning (6.30 am) and in the evening (3.30 pm).
Dead fish in the tanks were recorded. Water temperature, pH and
dissolved oxygen (DO) were measured daily at 6.30 am with mercury
in-glass thermometer, pH meter model WTW Ph 330 and DO meter
(Model MW600), respectively. At weekly intervals, 10 larvae were
randomly sampled from each tank, weighed individually and total
length measured. After 21 days of rearing, all the surviving larvae were
collected from each tank. For each individual, total length and body
weight were measured and recorded. The survival rate (SR), specific
growth rate (SGR), mean daily weight gain (MDWG) and Fulton’s
condition factor (K) were calculated as follows:

Hasil (Bahasa Indonesia) 2:

masing-masing padat tebar. Menggunakan aliran air melalui sistem budidaya ikan,
kedalaman air dipertahankan pada 20 cm (yaitu 18 liter) tingkat harian. Pos
goreng diberi makan untuk kenyang 4 kali (07:00, 10:00, 01:00 dan 04:00) setiap hari
dengan pakan lele komersial.
Selama percobaan, pakan sisa dan limbah yang tersedot keluar
dua kali sehari, di pagi hari (6:30) dan di malam hari (03:30).
ikan mati di tangki dicatat. Suhu air, pH dan
oksigen terlarut (DO) diukur setiap hari pukul 6.30 pagi dengan merkuri
di-kaca termometer, pH Model meteran WTW Ph 330 dan DO meteran
(Model MW600), masing-masing. Pada interval mingguan, 10 larva
secara acak sampel dari masing-masing tangki, ditimbang secara individual dan jumlah
panjang diukur. Setelah 21 hari pemeliharaan, semua larva yang masih hidup yang
dikumpulkan dari masing-masing tangki. Untuk masing-masing individu, total panjang dan tubuh
berat badan diukur dan dicatat. Tingkat kelangsungan hidup (SR), khusus
tingkat pertumbuhan (SGR), berarti berat badan harian (MDWG) dan Fulton
kondisi faktor (K) dihitung sebagai berikut: