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Catsh is one of the freshwater commodities whose demand continues to increase in Indonesia. Intensive cultivation is done to meet market demand. Intensive cultivation is done by optimizing stocking density. The aim of this research was to know the effect of different density on feed productivity, growth, feed conversion ratio (FCR) and survival of catsh dumbo fry (Clarias gariepinus, Burch) in biooc and nitrobacter media. This study used a completely randomized design (RAL) with 6 treatments and 3 replications. The test animals used catsh dumbo (Clarias gariepinus, Burch) with an average weight of 0,6 ± 0,1g and an average length of 4 cm. Catsh dombo seeds are kept in tarpaulin ponds 2 m in diameter with water volume ± 1 m3 for 45 days and feeding 3% of biomass weight. The results showed that the different density of stocking in biooc and nitrobacter media had increase on productivity, specic growth rate, feed efciency and no signicant effect on the survival of catsh dumbo fry.

EFFECT OF DIFFERENT STOCKING DENSITY TO GROWTH RATE OF CATFISH (Clarias gariepinus, Burch) CULTURED IN BIOFLOC AND NITROBACTER MEDIA