Electronic Theses and Dissertation

Ikan kakap putih (Lates calcarifer) merupakan salah satu jenis ikan ekonomis penting yang berpotensi untuk dibudidayakan. Produksi larva ikan kakap putih dipengaruhi oleh pakan alami, salah satunya rotifera. Tujuan penelitian ini untuk mengetahui pengaruh pemberian fermentasi tepung maggot serta dosis terbaik yang digunakan terhadap pengkayaan rotifera (Brachionus plicatilis) sebagai pakan larva ikan kakap putih. Penelitian ini dilaksanakan selama 14 hari mulai dari 7 sampai 20 Mei 2025 di Balai Perikanan Budidaya Air Payau (BPBAP) Ujung Batee, Kabupaten Aceh Besar, Aceh. Rancangan yang digunakan berupa metode eksperimental dengan Rancangan Acak Lengkap (RAL) yang terdiri dari lima perlakuan dan empat ulangan. Perlakuan yang diuji adalah A; Nannocloropsis sp. (kontrol), B; Nannocloropsis sp. + fermentasi tepung maggot 1 gram/liter, C; Nannocloropsis sp.+fermentasi tepung maggot 3 gram/liter, D; Nannocloropsis sp.+fermentasi tepung maggot 6 gram/liter, dan E; Nannocloropsis sp.+fermentasi tepung maggot 9 gram/liter. Parameter yang diamati adalah pertumbuhan panjang mutlak, pertumbuhan berat mutlak, kelangsungan hidup dan kualitas air. Hasil penelitian menunjukkan bahwa pertumbuhan panjang dengan nilai 0,359±0,057 cm, pertumbuhan berat 0,002±0,0004 gram dan kelangsungan hidup dengan nilai 81,66±11,38%. Berdasarkan uji ANOVA yang telah dilakukan dapat disimpulkan bahwa pemberian pakan alami rotifera yang diperkaya dengan fermentasi tepung maggot memberikan pengaruh nyata terhadap pertumbuhan panjang dan berat. Namun berpengaruh sangat nyata terhadap kelangsungan hidup larva kakap putih. Pertumbuhan panjang, berat mutlak, dan kelangsungan hidup terbaik pada perlakuan D (6 gram/liter).

Kata kunci: Ikan kakap putih, fermentasi, rotifera, panjang berat, kelangsungan hidup

Lates calcarifer is one of the economically important fish species that has the potential to be cultivated. The production of white snapper larvae is influenced by natural food, one of which is rotifers. The purpose of this study was to determine the effect of maggot flour fermentation and the best dose used for the enrichment Brachionus plicatilis as a food for white snapper larvae. This research was conducted for 14 days starting from May 7 to 20, 2025 at the Center for Brackish Water Aquaculture (BPBAP) Ujung Batee, Aceh Besar Regency, Aceh. The design used was an experimental method with a completely randomized design (CRD) consisting of five treatments and four replicates. The treatments tested were A; Nannocloropsis sp. (control), B; Nannocloropsis sp. + fermented maggot flour 1 gram/liter, C; Nannocloropsis sp. + fermented maggot flour 3 grams/liter, D; Nannocloropsis sp. + fermented maggot flour 6 grams/liter, and E; Nannocloropsis sp. + fermented maggot flour 9 grams/liter. Parameters observed were absolute length growth, absolute weight growth, survival and water quality. The results showed that length growth with a value of 0.359 ± 0.057 cm, weight growth of 0.002 ± 0.0004 grams and survival with a value of 81.66 ± 11.38%. Based on the ANOVA test that has been done, it can be concluded that feeding natural rotifers enriched with fermented maggot flour gives a real effect on length and weight growth. However, it had a very significant effect on the survival of white snapper larvae. Growth in length, absolute weight, and survival were best in treatment D (6 grams/liter). It is recommended that fermented maggot flour at a dose of 6 grams be given to other fish larvae to observe the effects. Keywords: Lates calcarifer, fermentation, rotifers, length weight, survival.