EPA, DHA, ADG and FCR in Biofloc Catfish for Improving the Quality of the Nutrient with Fish Oil Administration

This research aims to determine the right dose of fish oil so that it has a good effect on the growth of catfish (Clarias sp.) biofloc as seen from the content of Omega-3 (EPA and DHA), daily average weight gain (ADG) and ratio ratio. feed (FCR). The research was carried out in September and October 2021 at the Ciparanje Green House, Padjadjaran University. The method used is an experimental method using a completely randomized design (CRD) consisting of four treatments with four replications with different levels of fish oil administration, namely 0% (A) as control, 2% (B), 4% (C), and 6%. (D). The fish used is Clarias sp. Fish cultivation from cultivators in Cileunyi village as many as 240 fish weighing 20.04 grams and an average length of 14 cm were randomly placed into 16 fiber tanks based on treatment, while each tank was filled with 15 fish. The size of the fiber tub used was 68 x 68 x 68 cm3 as a cultivation container. The feed given is commercial pellets with the trademark Hi-Provite 781. Fish oil used is fish oil. Parameters observed included omega-3 content, ADG, FCR, and water quality. The results showed that the optimum application of fish oil in increasing the value of EPA content was 36 mg/100g and DHA was 148.5 mg/100 g, the highest ADG value was 0.45%, and the best FCR value was 1.2 and water quality. which is still within the recommended limits in aquaculture using biofloc, provides evidence that the application of fish oil in biofloc aquaculture can improve the nutritional quality of catfish.