Feed is still one of the problems in aquaculture because it takes about 70% of operational costs. High prices is caused by imported raw materials for feed production. One possible effort to overcome this problem is to find alternative local raw materials to replace imported fish meal. The purpose of this study was to examine the proximate content of shrimp shell wastes from processing shrimp crackers (Paneus sp.) to be used as shrimp flour. Samples were colledted three times in a month, at the beginning, middle and end of the month. The waste of the heads, shells and tails of the shrimp were turned into flour for laboratory testing through proximate analysis. The data were tabulated using the Microsoft Excel softwareand then analyzed descriptively by comparing the nutrient content of shrimp waste flour with the feed requirements of mariculture. The results showed that shrimp shell flour contained protein, fat, carbohydrates and ash content of around 27.4%, 2.07%, 14.84% and 47.27%. while the resulting randemen ranged from 81.75%. Therefore, shrimp shell flour can be used as an alternative raw material for preparing marine fish feed.
Ekosistem terumbu karang merupakan ekosistem yang rentan terhadap kerusakan. Berbagai aktivitas manusia yang tidak ramah lingkungan dan perubahan iklim global telah menyebabkan kondisi ekosistem terumbu karang mengalami kerusakan, sehingga kondisi tutupan karang hidup yang baik semakin menurun, sementara yang mengalami kerusakan semakin meningkat. Untuk menjaga kondisi dan kelestarian ekosistem terumbu karang di Perairan Desa Sebong Lagoi agar tidak menurun, maka diperlukan suatu upaya konservasi terumbu karang. Salah satu upaya konservasi yang dapat dilakukan yaitu kegiatan transplantasi karang. Tujuan dari kegiatan pengabdian kepada masyarakat (PkM) ini adalah diharapkan kelompok masyarakat Kampung Baru, Desa Sebong Lagoi mampu melakukan kegiatan transplantasi karang, mulai dari tahap persiapan, pelaksanaan, hingga perawatan. Kegiatan yang dilakukan yaitu memberikan pengenalan dan pelatihan kegiatan tranplantasi karang kepada kelompok masyarakat Kampung Baru, Desa Sebong Lagoi mulai dari kegiatan persiapan dalam memilih lokasi dan peralatan yang dibutuhkan, pelaksanaan kegiatan transplantasi yaitu pemilihan induk dan metode transplantasi karang, serta pendampingan sehingga mampu mengaplikasikan kegiatan transplantasi dan perawatan transplantasi karang. Kegiatan ini mendapat respon positif dan antusias dari Kelompok Masyarakat Sadar Wisata (Pokdarwis) dan masyarakat Kampung Baru Desa Sebong Lagoi terkait kegiatan pengabdian tersebut, serta kegiatan pengabdian dapat dilakukan dalam bentuk pelatihan secara tatap muka dengan masyarakat, namun dengan memperhatikan protokol Covid-19.
Grouper has a large market demand and to meet this, the intensification of grouper cultivation is being carried out more massively. This situation increases the spread of diseases, one of which is sea leeches. This study aimed to obtain the concentration and duration of immersion garlic powder for the control of leeches that infects hybrid grouper (Epinephelus fuscoguttatus >< E. lanceolatus). This study used a factorial randomized design (concentration factor and garlic soaking time factor) with nine treatments and three replications. The treatment in this study was a combination of 0 g/L 0,375 g/L, and 0,750 g/L garlic powder concentration and immersion times of 20 minutes, 40 minutes, and 60 minutes. The results showed that concentrations of 0.375 g/L and 0.750 g/L were able to significantly reduce the intensity of leeches infecting hybrid grouper, namely 7.43% and 13.29%, respectively. The interaction between concentration and duration of immersion garlic powder on the percentage decrease in intensity was not significantly different. Immersion of garlic powder for 60 minutes was able to reduce the intensity of the leech by 9.56% and the results were significantly different with the immersion time of 20 and 40 minutes. However, the concentration and duration of soaking garlic powder were not able to reduce the prevalence of hybrid grouper infected with leeches. The R2 value of 0.748 means that there is a relationship between garlic powder concentration and the decrease in leech intensity in hybrid grouper. Powder garlic concentration of 0.750 g/L and immersion time of 60 minutes was able to reduce the intensity of leeches in hybrid grouper, but it was not effective in reducing the prevalence of fish infected with leeches. Keyword: garlic, hybrid grouper, sea leech ABSTRAK Ikan kerapu memiliki permintaan pasar yang besar dan untuk memenuhi hal tersebut, maka intensifikasi budidaya ikan kerapu perlu dilakukan secara lebih masif. Keadaan ini meningkatkan penyebaran penyakit, salah satunya lintah laut. Penelitian ini bertujuan untuk menentukan konsentrasi dan lama perendaman tepung bawang putih untuk pengendalian lintah yang menginfeksi ikan kerapu hibrida (Epinephelus fuscoguttatus >< E. lanceolatus). Penelitian ini menggunakan rancangan acak faktorial (faktor konsentrasi dan faktor lama perendaman bawang putih) dengan sembilan perlakuan dan tiga ulangan. Perlakuan di dalam penelitian ini adalah kombinasi antara konsentrasi tepung bawang putih 0%, 3%, 6%, dan lama perendaman 20 menit, 40 menit, dan 60 menit. Hasil penelitian menunjukkan bahwa konsentrasi 0,375 mg/L dan 0,750 mg/L mampu menurunkan intensitas lintah yang menginfeksi ikan kerapu cantang secara signifikan, yaitu sebesar 7,43% dan 13,29%. Interaksi antara konsentrasi dan lama perendaman bubuk bawang putih tidak berbeda signifikan terhadap penurunan intensitas lintah. Perendaman bawang putih selama 60 menit mampu menurunkan intensitas lintah sebesar 9,56% dan hasilnya berbeda signifikan dengan lama perendaman 20 dan 40 menit. Namun konsentrasi dan lama perendaman bawang putih tidak mampu menurunkan angka prevalensi kerapu cantang yang terinfeksi lintah. Nilai R2 sebesar 0,748 menunjukkan hubungan antara konsentrasi bubuk bawang putih dan penurunan intensitas lintah pada ikan kerapu cantang. Konsentrasi bawang putih 0,750 g/L dan waktu perendaman 60 menit mampu menurunkan intensitas serangan lintah pada kerapu hibrida, namun tidak efektif menurunkan prevalensi ikan terinfeksi lintah. Kata kunci: bawang putih, ikan kerapu cantang, lintah laut
Benan is one of the islands located in Senayang District, Lingga Regency, Riau Islands. Most of the people on Benan Island work as sea cucumber fishermen, this is because the existence of sea cucumbers on the island is still abundant. The processing of liquid waste originating from post-harvest sea cucumbers in the form of wet sea cucumbers and dry sea cucumbers has not been carried out optimally, even though the more raw materials for sea cucumbers are prepared at the time of postharvest, the more waste generated will also be. The problem with partners is that the liquid waste originating from the post-harvest preparation of sea cucumbers has not been carried out optimally. The solution given to partners is education through socialization of liquid waste processing from the results of postharvest preparation of sea cucumbers into local microorganisms (MOL) in the Benan village field trip group, so that postharvest processing of sea cucumbers becomes zero waste. The methods in the activities carried out are discussion and socialization. The results obtained after this service is increasing public knowledge about sea cucumber wastewater treatment.
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