THE EFFECT OF FEEDING DIFFERENT MOLASS CONCENTRATIONS ON THE GROWTH AND SURVIVAL RATE OF PEARL CATFISH (Clarias gariepinus)

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Abstract

One of the efforts to increase catfish production in Indonesia is through intensive cultivation efforts. The development of intensive catfish cultivation processes has an impact on increasing waste in waters. One technology that can overcome the problem of aquaculture waste is biofloc. The tools and materials used in this study were aquariums, catfish measuring 7 cm, feed with a protein content of 33%, molasses, commercial probiotics containing Lactobacillus plantarum, Lactobacillus fermentum, Bacillus subtilis and Pseudomonas putida. Feeding with a dose of 5% of the total fish biomass. This study used a RAL consisting of five treatments with four replications. Treatment P0 (control) without molasses, treatment P1 giving molasses with a C/N ratio of 12, treatment P2 giving molasses with a C/N ratio of 15, treatment P3 giving molasses with a C/N ratio of 18, treatment P4 giving molasses with a C/N ratio of 21. This study used an experimental method. The data collected were absolute growth, absolute length, water quality variable measurement results, and survival rate (SR). The provision of different molasses concentrations did not significantly affect the survival rate but had a very significant effect on the growth of weight and absolute length of catfish. The provision of molasses with a C/N ratio of 18 provided the best growth, namely an average absolute weight of 11.9 grams and an increase in absolute length of 6.2 cm.