HighlightThe best salinity for the thallus growth of K. alvarezii is 32 mg/LThe salinity indicates the osmotic balance of K. alvarezii seaweedThis osmoregulation process affects the nutrient absorption of K. alvarezii seaweedThis study aims to develop the availibility of superior seeds of K. alvareziiAbstract Kappaphycus alvarezii is one of the leading commodities in Indonesian waters. Demand for this commodity is quite high, as reflected in the increasing volume of exports each year. Fulfillment of these demands is obtained from the production of cultivation. Generally farmers get natural seaweed seedlings, namely cuttings from existing seaweed. The continuous use of seeds from nature can cause deterioration in the quality and quantity. Handling the problem of quality deterioration from seaweed seeds originating from nature, can be overcome by multiplying the seeds through tissue culture methods in vitro. In term of tissue culture techniques method, the most important thing to note is environmental parameters. An environment parameter that changes suddenly such as salinity can inhibit the growth of seaweed. Thus, this work is attampting the different salinity treatment on seaweed explants K. alvarezii. This study aims at determining (weight) the explants of K. alvarezii with a comparison of the different salinity levels in the in vitro tissue culture method. The method used in this study was a completely randomized design (CRD) with the different salinity treatments namely 30, 31, 32, 33, and 34 ppt. The results showed that the different salinities influenced the growth rate of K. alvarezii seaweed explants with the best explant growth at the salinity of 31 ppt, while the lowest growth value was obtained at 34 ppt
Pakan merupakan salah satu komponen strategis yang sangat menentukan keberhasilan usaha budidaya. Pada kegiatan tersebut, hampir 60-70% dari total biaya produksi digunakan untuk pembelian pakan. Tujuan pelaksanaan kegiatan pelatihan pembuatan pakan ikan ini adalah untuk membantu pembudidaya ikan dalam memenuhi ketersediaan pakan selama budidaya sehingga dapat menekan biaya pakan yang relatif mahal. Pengabdian masyarakat dilaksanakan pada bulan Juli 2021 yang bertempat di Laboratorium Sistem dan Teknologi Budidaya, Fakultas Perikanan dan Ilmu Kelautan Universitas Khairun dengan melibatkan keterwakilan pelaku usaha budidaya dan mahasiswa program studi budidaya perairan. Metode pelatihan terdiri dari penyuluhan langsung bagaimana membuat pakan yang baik dengan menggunakan bahan-bahan yang ada di sekitar dan mudah didapat serta murah. Kesimpulan yang dapat diambil yaitu pembuatan pakan ikan dapat dilakukan oleh pembudidaya ikan dengan mudah, bahan baku yang digunakan dalam pembuatan pakan dapat diperoleh di wilayah sekitar sehingga mempermudah pembudidaya untuk membuat pakan sendiri tanpa tergantung dari pakan komersial (pabrik), hal ini dapat membantu menekan biaya pakan yang selama ini menjadi masalah ditingkat pembudidaya.
Seaweed is one of the important marine commodities and is a leading commodity. Seaweed K. alvarezii is a type of carrageenan-producing seaweed, as a food source for humans, pharmaceutical ingredients, as a thickener, stabilizer and emulsion.Carrageenan is used in food products, pharmaceuticals, textile cosmetics, toothpaste and other industries. Seaweed has a fairly complete nutritional content. Chemically seaweed consists of water (27.8%), protein (5.4%), carbohydrate (33.3%), fat (8.6%), crude fiber (3%), and ash (22.5%). This review article aims to reveal the nutritional composition of seaweed K. alvarezii, especially protein, amino acids, fat, ash content, minerals and vitamins. Seaweed K. alvarezii has nutritional composition values such as protein, amino acids, fat, ash content, minerals and vitamins that vary in nutritional value.
Indari is one of the coastal areas in the West Bacan Subdistrict, Regency of South Halmahera, Province of North Mollucas. Fisheries business activities that are quite popular in this region are aquaculture with seaweed commodities. Indari waters is also one of the areas designated as seaweed cultivation development zones in Province of North Mollucas. One of the factors that determine the success of a seaweed cultivation business is production. This is because production is the final result obtained from a cultivation business. The purpose of this research was to determine the production of seaweed K.alvarezii cultivation based on seasons. The method used in the survey is a method of interviewing using questionnaires to seaweed farmers as many as 30 people. Production data collected is wet and dry production data by season. Production data collected is wet and dry production data by season. The results showed that the highest seaweed K.alvarezii production was found in the dry season with wet production of 9.320 kg and dry production of 852.5 kg, whereas in the rainy season, wet production was 898.125 kg and dry production was 718.5 kg.
Maggot atau larva dari lalat black soldier fly (Hermetia illucens) merupakan salah satu alternatif pakan yang memenuhi persyaratan sebagai sumber protein. Bahan makanan yang mengandung protein kasar lebih dari 19%, digolongkan sebagai bahan makanan sumber protein. Maggot merupakan salah satu jenis pakan alami yang memiliki protein tinggi. Maggot mengandung 41-42% protein kasar, 31-35% ekstrak eter, 14-15% abu, 4,8-5,1% kalsium, dan 0,6-0,63% fosfor dalam bentuk kering. Larva lalat Black soldier dapat digunakan untuk mengkonversi limbah seperti limbah industri pertanian, peternakan, ataupun kotoran manusia. Untuk membudidayakan pakan alami ini selain relatif mudah, biaya yang dikeluarkan juga tidak terlalu besar. Pengabdian Kepada Masyarakat (PKM) dilaksanakan di Kelurahan Kastela pada Bulan Juli 2020 dimana Kelurahan Kastela merupakan lokasi Laboratorium yang dimiliki oleh Fakultas Perikanan dan Kelautan Unkhair dan merupakan lokasi penelitian sekaligus pengabdian masyarakat. Tujuan dari dilaksanakan pengabdian masyarakat ini yaitu; Memberi informasi kepada masyarakat bagaimana membuat pakan ikan yang murah, mudah dan ramah lingkungan sehingga masyarakat tidak kesulitan untuk mendapatkan pakan ikan. Kesimpulan dari kegiatan PKM ini adalah menambah keterampilan masyarakat teknik kultur maggot (Hermetia illucens) pengganti pellet sebagai pakan ikan.
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