Pakan merupakan faktor penting dalam kegiatan budidaya ikan secara intensif. Penggunaan Lemna minor sebagai bahan baku pakan karena mudah didapat dan mengandung nutrisi yang baik. Adanya kandungan serat yang tinggi pada Lemna minor sehingga sulit untuk dicerna dan memerlukan proses fermentasi. Penelitian ini bertujuan untuk mengetahui pemanfaatan pakan tepung Lemna minor fermentasi terhadap pertumbuhan ikan bawal. Metode Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 ulangan, terdiri dari A tanpa tepung Lemna minor fermentasi, B tepung Lemna minor fermentasi 10%, C tepung Lemna minor fermentasi 20% dan D tepung Lemna minor fermentasi 30%. Data yang diamati yaitu jumlah konsumsi pakan (JKP), efisiensi pemanfaatan pakan (EPP), Laju pertumbuhan relatif (RGR) dan sintasan. Hasil menunjukkan bahwa perlakuan C (tepung Lemna minor fermentasi 20%) mampu menghasilkan rata-rata JKP sebesar 287,33 g, EPP sebesar 0,052%, RGR sebesar 0,090%/hari dan SR sebesar 100%Feed is an important factor in intensive fish aquaculture activities. Use Lemna minor as a feed raw material because it is easily available and contains good nutrition. The composition of high fiber in Lemna makes it difficult to digest and requires a fermentation process. This study aims to learn how to use Lemna fermentation flour on the growth of pomfret. Method used was completely randomiza design with 4 treatments and 3 replications, consisting of A without Lemna flour fermented, B Lemna flour fermented 10%, C Lemna flour 20% fermentation and D Lemna flour 30% fermentation. Interesting data are the amount of feed consumption, increased feed efficiency (EPP), relative growth rate (RGR) and survival rate. The results showed that the treatment of C (Lemna minor flour fermentation of 20%) was able to produce an average JKP of 287.33 g, EPP of 0.052%, RGR of 0.090%/day and SR of 100%
Dalam pemanfaatan Lemna minor sebagai bahan baku pakan ikan terkendala dengan nilai kasarnya yang tinggi sehingga menghambat pencernaan dan penyerapan nutrisi dalam saluran pencernaan ikan. Teknologi tepat guna yang dapat mengatasi masalah tersebut adalah fermentasi. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan tepung lemna fermentasi terhadap pertumbuhan dan rasio konversi pakan ikan bawal. Ikan yang digunakan dalam penelitian ini adalah ikan bawal berukuran 3-5 cm dipelihara selama 35 hari dan diberikan pakan secara at satiation sebanyak dua kali sehari. Perlakuan lemna fermentasi diberikan pada 4 dosis yaitu (0, 10, 20, 30)%/kg pakan. Hasil penelitian menunjukkan bahwa penambahan lemna fermentasi 20% dapat meningkatkan pertumbuhan ikan bawal, namun pada penambahan lemna fermentasi 30% pertumbuhan ikan bawal cenderung turun. Kesimpulan yang ditarik dari penelitian ini adalah dosis lemna fermentasi 20% merupakan dosis terbaik secara deskriptif dengan nilai laju pertumbuhan spesifik 3,7%/hari, rasio konversi pakan 19,14 dan sintasan hidup 100%. Using Lemna minor as fish feed ingredients constrained by its crude fiber which inhibits the digestive and absorption abilities in the fish digestive systems. The appropriate technology that could overcome this problem is fermentation. The aim of this study was to evaluate fermented lemna supplemented in artificial feed on the growth rate and conversion feed ratio of pomfret fish. Experimental fish used was pomfret fish at the initial size of 3-5 cm and was reared for 35 days and fish were fed twice a day at satiation. The study consists of four dosage (0,10,20,30)%/kg of artificial feed. The results of this study indicates a supplementation of fermented lemna 20% could increase growth performances of pomfret fish although on supplementation of fermented lemna 30% growth performances had a lower growth. The conclusions are supplementation fermented lemna 20% is the best descriptive dosage with a growth specific rate 3,7%/days, feed conversion ratio 19,14 and survival rate 100% of pomfret fish..
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