THE GROWTH AND SURVIVAL RATE OF CATFISH (Clarias gariepinus) REARED INTENSIVELY USE BIO-FLOC TECHNOLOGY
DOI:
https://doi.org/10.30595/agritech.v24i2.13420Keywords:
bio-floc technology, Clarias gariepinus, growth, survival rateAbstract
The study purposed to investigate the growth and survival rate of catfish (Clarias gariepinus) reared intensively use bio-floc technology. The research used an experimental method, consists of two treatments. Treatment A was catfish reared uses Noni fruit (Morinda citrifolia) fermentation on culture media every seven days with a dose of 10 ml/liter. The treatment also uses papaya leaves as additional feed. Treatment B was catfish reared apply bio-floc technology use probiotics. Probiotic consists of Lactobacillus spp. and Thiobacillus spp. The addition of 5 grams of Lactobacillus spp. and 500 ml molasses in rearing media were carried out every seven days. The feed used in the experiment was fermented by Thiobacillus spp. and molasses at a dose of 150 ml/kg of feed. Two plastic tanks with a volume of 5000 L were used in the experiments. Amount 3000 catfish with the average initial body weight of 6 grams reared in each plastic tank. Catfish were fed twice daily with a feeding rate of 7%. Feed nutrition content was protein minimum 28%, fat maximum 4%, and fiber maximum 5%. Catfish were reared for 64 days. The research data consist of fish growth, feed conversion ratio, and survival rate of fish. Data were analyzed quantitatively descriptively. The results showed that survival rate of catfish in treatment B higher than treatment A, but growth of catfish in treatment B lower than treatment A. Feed conversion ratio in treatment A lower than treatment B. The specific growth rate, feed conversion ratio, and survival rate of catfish in treatment A were 5.19%, 69.83%, and 0.78, respectively. At the same time, the specific growth rate, feed conversion ratio, and survival rate of catfish in treatment B were 3.89%, 90.80%, and 0.95, respectively. The results were indicated that bio-floc technology could improve the survival rate of catfish but no increased growth of catfish.References
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