CATFISH CULTURE (Clarias sp) BIOFLOC SYSTEM WITH PROBIOTICS EM-4

Abstract

Catfish (Clarias sp) is a freshwater commodity that has high economic value and its
production increases every year. For this reason, efforts are needed to increase production,
one of which is by increasing feed nutrition using EM-4 probiotics. This study aims to
determine the effect of feeding fermented feed with EM-4 probiotics on the growth rate and
survival rate of catfish (Clarias sp), which were cultured using biofloc technology. The
method used was a completely randomized design (CRD) with 3 treatments 3 replications,
with treatments A (dose 6 ml/kg), B (dose 8 ml/kg), C (dose 10 ml/kg) and K (without
probiotics). . The test fish used were catfish seeds measuring 7-9 cm with a stocking density
of 500 individuals/m3, a water level of 50 cm and a water volume of 3.5325 m3. Fish
maintenance was carried out for 30 days with a frequency of feeding 3 times as much as 5%
of the fish weight. The results showed that the administration of EM-4 at different doses of
feed had a significant effect (P<0.05) on absolute individual body weight growth, daily
growth rate and feed conversion ratio, but did not significantly differ on survival rates. The
best results were C2 treatment (dose of 10 ml/kg) with an absolute individual weight gain of
270.5 g, a daily growth rate of 123.5%, feed conversion of 3.43, and a survival rate of 97%.
Water quality parameters are in the range that is suitable for catfish life The results showed
that the administration of EM-4 at different doses of feed had a significant effect (P<0.05) on
absolute individual body weight growth, daily growth rate and feed conversion ratio, but did
not significantly differ on survival rates. The best results were C2 treatment (dose of 10
ml/kg) with an absolute individual weight gain of 270.5 g, a daily growth rate of 123.5%,
feed conversion of 3.43, and a survival rate of 97%. Water quality parameters are in the range
that is suitable for catfish life (Clarias sp).