Electronic Theses and Dissertation

Tingginya biaya dan keterbatasan ketersediaan sumber protein dalam pakan ikan mendorong pencarian alternatif berbasis nabati yang berkelanjutan. penelitian ini bertujuan untuk mengkaji pengaruh penambahan tepung daun indigofera zollingeriana, calliandra calothyrsus, dan lemna minor dalam pakan terhadap performa pertumbuhan dan efisiensi pakan benih ikan bandeng (chanos chanos). pengujian pakan dilakukan selama 40 hari menggunakan rancangan acak kelompok (rak) dengan empat perlakuan dan tiga ulangan: pa (kontrol), pb (30% tepung daun indigofera), pc (30% calliandra), dan pd (30% lemna minor). parameter yang diamati meliputi pertambahan berat dan panjang, laju pertumbuhan spesifik (sgr), rasio konversi pakan (fcr), efisiensi pakan (ep), dan tingkat kelangsungan hidup (sr). hasil menunjukkan bahwa ikan yang diberi pakan pb menunjukkan performa pertumbuhan yang paling baik secara signifikan (p < 0,05), dengan berat mutlak 3,97 g, panjang mutlak 2,79 cm, sgr 3,73%/hari, fcr 1,48, ep 70,01%, dan sr 80%. temuan ini menunjukkan bahwa tepung daun indigofera zollingeriana merupakan sumber protein nabati alternatif yang menjanjikan untuk pakan ikan bandeng, sehingga mampu meningkatkan pertumbuhan dan kelangsungan hidup serta mendukung praktik budidaya perikanan yang berkelanjutan. kata kunci: indigofera zollingeriana, caliandra, lemna minor, ikan bandeng, , performa pertumbuhan, efisiensi pakan.

The high cost and limited availability of protein sources in fish feed encourage the search for sustainable plant-based alternatives. This study aims to examine the effect of adding Indigofera zollingeriana, Calliandra calothyrsus, and Lemna minor leaf meal to feed on the growth performance and feed efficiency of milkfish (Chanos chanos) fry. Feed testing was conducted for 40 days using a Randomized Block Design (RBD) with four treatments and three replications: PA (control), PB (30% Indigofera leaf meal), PC (30% Calliandra), and PD (30% Lemna minor). The parameters observed included weight and length gain, specific growth rate (SGR), feed conversion ratio (FCR), feed efficiency (EP), and survival rate (SR). The results showed that fish fed with PB showed the best growth performance significantly (p < 0.05), with an absolute weight of 3.97 g, an absolute length of 2.79 cm, SGR of 3.73%/day, FCR of 1.48, EP of 70.01%, and SR of 80%. These findings indicate that Indigofera zollingeriana leaf meal is a promising alternative source of vegetable protein for milkfish feed, thus increasing growth and survival and supporting sustainable fish farming practices. Keywords: Indigofera zollingeriana, Caliandra, Lemna minor, milkfish, growth performance, feed efficiency.