This study aims to determine the effect of using alternative ingredients as a combination feed on the growth of catfish. This research was conducted in October - November 2020 which took place at the Laboratory of the Experimental Pond of the Departemen of Aquaculture, Sriwijaya University. The test fish used were catfish seeds measuring 5 - 6 cm. The study was designed with an experimental method in the form of a completely randomized design (CRD). The treatment to be used is a combination of commercial feed with alternative feed as many as 5 treatments with 3 replications, P0: commercial feed 100%, P1: combination of commercial feed 25% and alternative feed 75%, P2: combination of commercial feed 50% and alternative feed 50%, P3: combination of 75% commercial feed and alternative feed 25%, and P4: alternative feed 100%. Based on the results obtained, it shows that the use of alternative feed as a combination of feed has no significant effect on growth, feed efficiency and survival of catfish. The use of alternative feed as a combination feed of 50% (P2) has an effect on the growth and feed efficiency which is high in catfish of catfish. The growth of absolute length, absolute weight, and efficiency of fish feed produced were 1.67 cm, 4.20 grams, and 53.25%.

Nipah is one of mangrove plant that grows in coastal areas. South Sumatra province has a region with a watershed which is overgrown with nipah plants. Until now, nipah fruit has a low economic value because of the lacks of knowledge about the processing techniques of nipah fruit and the lacks of scientific attention which cover up the potential of nipah fruit as a functional food. This study aims to reveal the potential of nipah fruit, especially as natural antioxidants source. Total phenolics content (TPC) and antioxidant activities of Nypa fruticans fruit extracts (ripe and unripe) have been analyzed. Fruit extract from unripe nipah fruits (FEUN) got the highest phenolics content (121.3 ± 3.3 mg GAE/g). Radical scavenging activity of FEUN, assessed by 1, 1–diphenyl–2 - picrylhydrazyl (DPPH) radicals showed inhibitory activity about 81 ± 3.1%RSA. Hopefully, this research could reveal the potential of nipah fruit as a potential source of natural antioxidant

The feed is one of the most important factors in the growth and survival of fish. One of the efforts made to increase the growth and survival of fish is the provision of herbal supplements in fish feed. The research aim is to provide information about the utilization of herbal supplements on the growth and survival of catfish (Clarias sp). This research has been carried out from July to August 2020 at Bandar Agung Lahat Village, South Sumatera. Catfish rearing containers use two waring units placed in concrete ponds with two treatment that P0: control (without herbal supplements) and P1: utilization of herbal supplements and. The data taken includes absolute growth and absolute length, survival, feed efficiency, and water quality. The utilization of herbal supplements has a good effect on fish growth, feed efficiency, and survival rate. Maintenance of P0 (control) resulted in an absolute weight of 9.79 grams, an absolute length of 6.3 cm, the survival of 85.15%, feed efficiency of 107.89% while maintenance of P1 with the utilization of herbal supplements resulted in an absolute weight of 14.17 grams, an absolute length 7.8 cm, survival 98.57%, feed efficiency 161.170%.