Identifikasi kandungan fucoidan yang diekstrak dari Sargassum sp. yang diambil dari Pantai Pantai Sundak, Gunung Kidul

This study aims to identify the fucoidan content extracted from Sargassum sp. collected from Sundak Beach, Gunung Kidul. Fucoidan is a sulfated polysaccharide compound with various biological activities, including anticoagulant, antitumor, and anti-inflammatory activities. Sargassum sp. was chosen as the source of fucoidan due to its abundance in coastal waters and its pharmacological potential. The extraction method was carried out using a hot water extraction technique with acid treatment, followed by a purification process using dialysis. The extracted fucoidan content was then analyzed using spectrophotometry and Thin Layer Chromatography (TLC) to determine its concentration and purity. Fourier Transform Infrared (FTIR) spectroscopy was used to identify the functional groups of the compound. The results showed that fucoidan was successfully extracted from Sargassum sp. with a significant yield. The main component of the extracted fucoidan from Sargassum sp. in this study was fucose, as indicated by the TLC results. The Rf value of the fucoidan hydrolysate from Sargassum sp. and the standard fucoidan, which was 0.51, matched that of fucose, indicating that both samples contained fucose. This study concludes that Sargassum sp. from Sundak Beach, Gunung Kidul, is a potential source for high-quality fucoidan production

Efektivitas Kunyit (Curcuma longa L.) sebagai Suplemen Pakan Ikan

Feed supplements for aquaculture activities are materials that currently widely used. There are many feed supplements using herbal ingredients, because it is considered more safety for fish. It is based on prohibition of antibiotics usage, because it can create resistance in microorganisms and has a negative impact on environment. Turmeric is a spice that widely used as a feed supplement. Most turmeric is used for cooking ingredient, but it is also widely used in traditional medicine. Several active compounds in turmeric such as curcumin and turmerone have been studied. These active compound have been proven could increase antioxidant and prevent lipid peroxidation, so it can increase the fish growth. Apart from that, this active compound is also useful in inhibiting bacterial growth by damaging membrane and preventing the formation of biofilms

KONDISI KELIMPAHAN DAN STRUKTUR KOMUNITAS FITOPLANKTON DI PERAIRAN PANTAI SENGGIGI KABUPATEN LOMBOK BARAT

Fitoplankton adalah salah satu mikroorganisme akuatik yang memiliki peran penting pada siklus kehidupan di air. Sebagai produsen primer dalam suatu rantai atau jaring makanan, fitoplankton dapat menjadi parameter ekologi untuk menggambarkan kondisi perairan, melalui kelimpahan dan struktur komunitasnya. Penelitian bertujuan untuk mengetahui kondisi kelimpahan dan struktur komunitas fitoplankton di perairan Pantai Senggigi, Kabupaten Lombok Barat dan dilaksanakan pada bulan Oktober 2022. Jenis fitoplankton yang ditemukan terdiri dari 2 divisi yaitu Chrysophyta dan Pyrrophyta. Divisi Chrysophyta yang teridentifikasi terdiri dari genus Cocconeis, Torodinium, Skeletonema, Nitzchia, Guinardia dan Eunotia, sedangkan dari divisi Pyrrophyta terdiri dari 3 genus yaitu Pyrocystis, Gymnodinium dan Histioneis. Hasil kelimpahan fitoplankton yang ditemukan di seluruh stasiun berkisar 4.267 – 8.213 Ind/L yang menunjukkan perairan dalam kondisi oligotrofik. Sedangkan struktur komunitas digambarkan dari hasil perhitungan indeks keanekaragaman (H’) berkisar 1,59 – 1,80, indeks keseragaman 0,86 – 0,90 dan indeks dominansi 0,19 – 0,25. Nilai – nilai tersebut menunjukkan lokasi perairan Pantai Senggigi dalam keadaan yang stabil, atau tidak muncul genus yang mendominasi.Fitoplankton adalah salah satu mikroorganisme akuatik yang memiliki peran penting pada siklus kehidupan di air. Sebagai produsen primer dalam suatu rantai atau jaring makanan, fitoplankton dapat menjadi parameter ekologi untuk menggambarkan kondisi perairan, melalui kelimpahan dan struktur komunitasnya. Penelitian bertujuan untuk mengetahui kondisi kelimpahan dan struktur komunitas fitoplankton di perairan Pantai Senggigi, Kabupaten Lombok Barat dan dilaksanakan pada bulan Oktober 2022. Jenis fitoplankton yang ditemukan terdiri dari 2 divisi yaitu Chrysophyta dan Pyrrophyta. Divisi Chrysophyta yang teridentifikasi terdiri dari genus Cocconeis, Torodinium, Skeletonema, Nitzchia, Guinardia dan Eunotia, sedangkan dari divisi Pyrrophyta terdiri dari 3 genus yaitu Pyrocystis, Gymnodinium dan Histioneis. Hasil kelimpahan fitoplankton yang ditemukan di seluruh stasiun berkisar 4.267 – 8.213 Ind/L yang menunjukkan perairan dalam kondisi oligotrofik. Sedangkan struktur komunitas digambarkan dari hasil perhitungan indeks keanekaragaman (H’) berkisar 1,59 – 1,80, indeks keseragaman 0,86 – 0,90 dan indeks dominansi 0,19 – 0,25. Nilai – nilai tersebut menunjukkan lokasi perairan Pantai Senggigi dalam keadaan yang stabil, atau tidak muncul genus yang mendominasi

Fish Oil Substitution in Fish Feed Using Vegetable Oils, Terrestrial Animal Fats and Indonesian Local Raw Material Candidates (A Review)

Aquaculture is one of the world's most rapidly expanding producers of protein-rich diets. This is in accordance with the rising demand for feed to sustain these activities. However, the use of natural materials for fish feed, particularly fish oil, creates a paradox because it is derived from fish, therefore it is against the principles of sustainable agriculture. This article examines vegetable oils with a superior nutritional profile, palatability, digestibility, anti-nutritional factors, availability, and cost in comparison to fish oil. The ten-year-old articles selected and compiled originate from national (SHINTA) and international (Elsevier and Proquest) websites. Finding alternatives to fish oil as a source of lipids in fish diets is the result of several decades of research. Vegetable and animal sources are two main types of fish oil substitutes. Up to one hundred percent of fish oil can be substituted with vegetable oils like palm oil, canola oil, soybean oil, and olive oil. Similarly, animal sources can provide up to 75% of the lipids necessary for fish diets. Moreover, rubber seed oil has the potential to supplant fish oil in Indonesia due to its high omega-3 fatty acid content, which is comparable to that of fish oil. The conclusion of this review is that there are multiple sources of lipids that can be used to replace fish oil, and that more consideration must be given to the type of lipid source used in accordance with the type of fish being cultivated and the location of the fish cultivation

Effect of Adding Tuna Fish Bone Meal as a Source of Calcium Minerals in Feed in Freshwater Vannamei Shrimp (Litopenaeus vannamei) Cultivation

The aim of this research is to analyze the effect of giving tuna bone meal as a mineral source to vaname shrimp cultivated in freshwater media, at doses of 1%, 2%, 3% and 4%. Fish bones are a form of fish processing industry waste that contains the highest calcium among fish body parts, because the main components of fish bones are calcium, phosphorus and carbonate. The calcium content in tuna bone meal is higher than the calcium content in other fish bone meal, namely in catfish bone meal 13.48%, mandidihang fish bone meal 2.12%, catfish bone meal 30.95% and in fish bone meal tuna ranges from 23-39%. Based on research that has been carried out, the addition of tuna fish bone meal has a real influence on the growth of specific weight, absolute weight, specific length, absolute length but there is no significant difference to FCR. The best value was obtained in Treatment 5 with the addition of tuna bone meal at a dose of 4% ( 4 grams / 100gram feed). Specific weight values at P5 (2.85%), absolute weight (27.8), absolute length (6.00cm), specific length (3.46%

Teknologi Microbubble Pada Kolam Ikan Koi Untuk Meningkatkan Kualitas Air di Desa Sokong Kabupaten Lombok Utara

Koi fish cultivation activities are beginning to be developed in Sokong village, this is due to increasingly high demand, so it must be taken to improve the quality of koi fish production, one of which is by improving water quality. The availability of dissolved oxygen is one of the water quality parameters which is an indicator of good and bad water quality. So, to maintain the quality of dissolved oxygen, technology is needed that can maintain and meet oxygen needs. This community service activity aims to provide information regarding the application of microbubble technology to maintain dissolved oxygen in water so that it can increase the productivity of koi fish cultivation in Sokong village, North Lombok Regency. This service activity consists of several stages including location surveys, socialization and discussions, making and assembling microbubbles and testing microbubbles. Microbubble is a technology that functions to increase oxygen transfer through small water bubbles. The type of microbubble applied is the venturi type because it has a simple mechanism and the tools used are easy to obtain. This activity received a very good response as evidenced by the enthusiasm of partners participating in all stages. The benefit of this service is not only providing information on microbubble technology, but the use of this technology can provide solutions for managing and monitoring koi fish cultivation media in Sokong Village, North Lombok Regency.

Sosialisasi dan Pelatihan Budidaya Maggot sebagai Biokonversi Limbah Organik di Desa Tanjung, Lombok Utara

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memberikan sosialisasi dan pelatihan Budidaya Maggot sebagai biokonversi limbah organik di Dusun Kandang Kaoq, Desa Tanjung, Lombok Utara. Kegiatan ini dilakukan dalam beberapa tahap yaitu survei dan persiapan bahan, demonstrasi media penetasan telur maggot, dan pendampingan. Metode yang digunakan yaitu ceramah dan diskusi interaktif.  Kegiatan ini melibatkan beberapa stakeholder terdiri dari 30 orang masyarakat Dusun Kandang Kaoq, 10 orang mahasiswa KKN Tematik Universitas Mataram, dan 6 orang Dosen Program Studi Budidaya Perairan Universitas Mataram. Masyarakat Dusun Kandang Kaoq sangat antusias untuk mengikuti penyuluhan dan sosialisasi budidaya maggot sebagai biokonversi limbah organik. Selain itu, mereka mendapatkan pemahaman baru mengenai peluang dan potensi untuk membudidayakan maggot BSF sebagai alternatif sumber pendapatan tambahan

Penyuluhan Teknik Budidaya Ikan Menggunakan Keramba Jaring Apung di Danau Lebo Kabupaten Sumbawa Barat

Kegiatan pengabdian ini dilakukan dengan menggunakan metode penyuluhan yang disertai dengan demonstrasi. Kegiatan diikuti oleh 42 orang peserta yang berasal dari daerah di sekitar danau Lebo Meraran. Kegiatan penyuluhan dan demonstrasi dilakukan di daerah pinggir danau. Materi penyuluhan yang disampaikan adalah tentang teknik pembuatan keramba, dan teknik budidaya di keramba jaring apung. Sebagai bahan demonstrasi maka disediakan miniatur keramba jaring apung yang dibuat dengan skala sebenarnya untuk ditampilkan pada saat kegiatan berlangsung. Para peserta sangat antusias untuk mengikuti kegiatan ini yang dibuktikan dengan keaktifan para peserta untuk berdiskusi secara terarah tentang topik yang disampaikan oleh pemateri. Hasil dari evaluasi yang dilakukan melalui tes tanya jawab secara langsung diketahui bahwa para peserta dapat mengerti tentang materi yang disampaikan serta berkeinginan untuk mengimplementasikan kegiatan budidaya ikan di keramba

Effect of Spirulina Flour Addition in Feed on the Increase of Colour Brightness Nemo Fish (Premnas biaculeatus)

The nemo fish (Premnas biaculeatus) is a type of marine ornamental fish in Indonesia that is in high demand among the general public. The popularity of this fish can be attributed to several factors, one of which is the brightness of its coloration. One of the plants that can be employed as a color enhancer for ornamental fish is spirulina. Spirulina is a microalgae that has been demonstrated to enhance the brightness of fish coloration. Therefore, it is necessary to research on the effect of adding spirulina flour to feed on increasing the brightness of the color of nemo fish (Premnas biaculeatus). The method used in this research is an experimental method with a completely randomized design. This treatment was carried out with 5 treatments and 3 repetitions, namely: P0 : 0%/kg, P1 : 2%/kg, P2 : 4%/kg, P3 : 6%/kg and P4 : 8%/kg.  The 5 treatments were repeated 3 times, resulting in 15 experimental units. The results of the researches carried out, it can be concluded that the addition of spirulina flour to feed on the brightness of the color of nemo fish (Premnas biaculeatus) is proven to increase the brightness of the color of nemo fish and the best treatment is p3 with a dose of 6%. The addition of spirulina flour to feed on the growth of length and absolute weight of nemo fish (Premnas biaculeatus) has a significant effect, while the survival rate has no significant effect

PEMANFAATAN DAUN KETAPANG SEBAGAI SOLUSI PENANGGULANGAN PENYAKIT IKAN HIAS DI LABUAPI, LOMBOK BARAT

Budidaya ikan hias merupakan salah satu kegiatan yang saat ini cukup banyak diminati. Hal ini disebabkan permintaan yang cukup tinggi dan cenderung mudah untuk melakukannya, sebab dapat dilakukan dalam skala rumah tangga. Salah satu masalah yang biasa dihadapi oleh pembudidaya adalah penyakit yang menyerang ikan hias. Ketika ikan hias terkena penyakit maka dapat menyebabkan kematian pada ikan sehingga merugikan bagi pembudidaya. Cara yang dapat digunakan adalah dengan menggunakan daun ketapang. Daun ketapang diketahui memiliki banyak manfaat, selain sebagai pengatur pH air dapat juga berfungsi untuk mengobati ikan hias yang terkena penyakit akibat serangan dari bakteri. Hal tersebut disebabkan kandungan senyawa fitokimia seperti flavonoid. Selain dari antibakteri daun ketapang juga memiliki kandungan antioksidan yang mampu meningkatkan pertumbuhan ikan hias. Hasil dari pengabdian masyarakat ini mendapatkan respon dan antusias yang sangat baik dari masyarakat terkait pemanfaatan daun ketapang dalam mencegah dan mengobati ikan yang terserang penyakit.   &nbsp