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Kegiatan pengabdian kepada masyarakat ini tentang Pemanfaatan Ampas Tahu dan Eceng gondok Sebagai Pakan Lele pada Kolam Terpal yang telah dilakukan di Dusun I Desa Lubuk Siam Kecamatan Siak Hulu Kabupaten Kampar, Riau dalam bentuk kegiatan penyuluhan dan pelatihan. Tujuan dari kegiatan ini adalah untuk memberikan pengetahuan dan penerapan teknik pembuatan pakan lele dari ampas tahu dan eceng gondok yang difermentasi dengan EM4 untuk budidaya ikan lele pada kolam terpal. Pada pelaksanaan kegiatan penyuluhan menggunakan metode ceramah, diskusi, dan demonstrasi. Sasaran dari penyuluhan ini adalah petani ikan/mitra dan masyarakat Dusun I Desa Lubuk Siam. Hasil dan ketercapaian sasaran mendapatkan solusi mengatasi permasalahan biaya pakan lele dan lamanya jangka waktu produksi/panen (± 6 bulan) dalam usaha budidaya yang dilakukannya menjadi ±3,5 meminimalisir biaya pakan dari Rp.17.000-Rp.20.000/kg menjadi Rp.3.000-Rp.5.000/kg, jadi menghemat biaya pakan ikan sebesar 50-60%. Kegiatan Pengabdian ini mendapat respon positif dari Kepala Desa dan perangkat desa, serta masyarakat Desa Lubuk Siam. Upaya pemberdayaan masyarakat Desa Lubuk Siam ini, dapat dilihat bahwa mitra sudah berhasil membuat pakan sendiri, menambah pendapatan mitra untuk kolam ukuran 10 m x 16 m dengan padat tebarnya 25.000-30.000 ekor sebesar Rp.3.000.000-Rp.4.000.000/bulan dan meningkatkan gizi keluarga.

There are many reports on bacterial flora of the gastroin testinal tracts of marine and freshwater fishes. Studies on those of mudskippers which inhabit brackish waters and mud flats, however, have been conducted only by Morii and Kasama1,2) in Japan and not yet for tropical mudskip pers. Mudskippers differ in the structure of the gastrointes tinal tracts (the stage of development of the stomach and the length of the intestine), feeding habits (herbivorous, carnivorous, and omnivorous habits), and habitat among fish species, and the intestinal flora also may differ with the differences of those. The present study was performed to discuss the primary factors that control the composition of the intestinal flora, and to compare the composition and the charactcristics of the intestinal flora of mundskippers in Japan and Indonesia.Bacteria were isolated from Boleophthalmus boddarti, B.dussumieri, Periophthalmus chrysospilos, Periophthalmodon schlosseri, Scartelaos histophorus, and Pseudapocryptes lanceolatus. The former five species were caught on the mud flat of Bengkalis and Sumatra, and P. lanceolatus in a drain (seawater inflow at high tide) in Ben gkalis town. Seawater was sampled from a mudskipper burrow. Mud was collected by using a sheet of sterilized gauze from the mud flat surface where mudskippers lived. Counting and isolation of bacteria and morphological, biochemical, and physiological tests were performed ac cording to the previous paper. 1.2)The viable counts of the intestine of mudskippers in In donesia (Table 1) were almost the same between 50 and 0% seawater media or 10 to 100 times higher in 50% sea water medium. Those in Japan were 100 to 10,000 times higher in 50% seawater medium.1) The extreme difference between those in Japan and Indonesia may come from the differences of the viable counts and the bacterial flora of mud between the two countries. The counts of the burrow water were extremely high in 50% seawater medium. On the contrary, the counts of the mud were rather higher in 0% seawater medium whereas those in Japan were 10 to 100 times higher in the 50% seawater medium." In 50% seawater medium the counts in the carnivorous and om nivorous fishes (105 to 108/ml) were higher than those in the herbivorous fishes (104 to 104/ml). A similar trend was also recognized between a herbivorous fish Boleophthalmus pectinirostris and a carnivorous fish Periophthalmus modestus in Japan

A Prospect to develop Chlorella industry has been conducted since 2015 to 2018. The pure chemical and waste water from oil palm industry as culture media of Chlorella sp. were used in this study. Result of this study indicated that pure chemical and palm oil waste water can promote the growth and product of Chlorella sp. The best growth of Chlorella sp. was found at pure chemical with cell density reached 1.6 x 107 cells/ml and biomass reached 1.24 g/l. The high growth of Chlorella sp. in palm oil wastewater was found at concentration of 20 % with cell desity of 6.6 x 106 cells/ml and biomass reached about 0.36 g/l. The concentration of nitrate in pure chemical culture medium was decreased from 15.43 to 1.46 and in palm oil wastewater was decreased from 13.8 mg/l at the beginning to 2.4 mg/l at the end and phosphate was decreased from 45.822. mg/l to 4.98 mg/l at the beginning to 0.17 mg/l at the end of 14 days culture period. Chlorella powder that was produced in pure chemical medium in this study can be used as Chlorella powder in capsule for human being and from palm oil wastewater medium can be used as supplement food for animal husbandry (calves) in Riau Province.