The feed must have a quality that matches the needs of the fish to produce high fish growth. Feed quality can be improved by adding alternative ingredients to feed. One alternative material that can be used is papaya leaves. The purpose of this study was to determine the effect of adding papaya leaves to feed on the growth of catfish (Clarias sp). This research was conducted in Muara Enim, South Sumatra in August 2020. The treatments were P0: control (without adding papaya leaves) and P1: with the addition of papaya leaves. The data observed included absolute growth, specific growth rate, feed efficiency, and survival. Fish maintenance data that obtained in treatment P0, that absolute weight growth of 8.43 g, absolute length growth 5.13 cm, specific growth rate 6.41 %, feed efficiency 95.77 %, and survival 76 %, while in P1 treatment using leaves papaya produced absolute weight growth of 10.57 g, absolute length growth of 5.17 cm, the specific growth rate of 5.84 %, feed efficiency 100.83 %, and survival 60 %. The results obtained indicate that the provision of papaya leaves affects the growth of catfish.

Desa Sakatiga terletak di Kecamatan Indralaya Kabupaten Ogan Ilir, Sumatera Selatan, memiliki potensi pengembangan perikanan budidaya. Permasalahan yang sering dialami oleh pembudidaya ikan lele di desa Sakatiga diantaranya tingginya harga pakan dan minimnya pengetahuan masyarakat tentang bahan lokal yang dapat digunakan sebagai bahan baku pakan ikan. Permasalahan tersebut dapat diatasi dengan membuat pakan secara mandiri. Tujuan dari kegiatan ini adalah mengetahui efektivitas pemanfaatan bahan baku lokal sebagai pakan ikan terhadap peningkatan produktivitas budidaya ikan lele (Clarias sp.) di desa Sakatiga, Kecamatan Indralaya, Kabupaten Ogan Ilir, Sumatera Selatan. Metode yang digunakan yaitu dengan penyuluhan dan diskusi, pelatihan pembuatan pakan serta demplot pemanfaatan bahan lokal sebagai bahan baku pakan ikan serta pendampingan teknis oleh tim dan dibantu mahasiswa yang melaksanakan praktik lapang di lokasi mitra. Berdasarkan hasil yang diperoleh menunjukkan adanya peningkatan pengetahuan masyarakat tentang bahan lokal yang dapat digunakan sebagai pakan ikan serta motivasi masyarakat untuk membuat pakan dengan menggunakan bahan baku lokal. Pemanfaatan bahan baku lokal sebagai pakan ikan lele menghasilkan pertumbuhan bobot dan panjang mutlak masing-masing sebesar 9,94 g dan 3,83 cm, laju pertumbuhan harian 2,21%/hari, efisiensi pakan 103,24% dan kelangsungan hidup 97%.

The aim of this research was to determine of optimum dosage of papain enzyme in feed for kissing gourami. This research used Completely Randomized Design non-factorial, consist of four treatments and three replications, namely: P0 (wihout papain supplementation in feed/as a control), P1 (1.5% papain in feed), P2 (3.0% papain in feed), and P3 (4.5% papain in feed). Kissing gourami with initial body weight of 0.51+0.07 g were stocked in each aquarium (volume 20 L of water) of 2 fish per litre of water. Fish reared for 45 days. During rearing time, fish were fed three times a day at satiation. Observed variable were growth, feed efficiency, protein retention, survival rate, and water quality of rearing media of kissing gourami. The growth, feed efficinecy, protein retention, and survival of kissing gourami were analyzed by analysis of variance. If the data significant different were analyzed by Least Significant Different test. Water quality of rearing media were descriptive analysis. The result showed that addition of 1.5% papain enzyme in feed result in the growth, feed efficiency, protein retention, and survival of kissing gourami were highest. The weight growth of fish of 0.44 g per fish, feed efficiency of 38.66%, protein retention of 23.60%, and survival of 97.78%. Water quality of rearing media were still in tolerance range for kissing gourami.Keywords: Feed efficiency; Growth; Kissing gourami; Papain enzyme; Protein retention

<p class="NoParagraphStyle" align="center"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle" align="center"> </p><p>This study was aimed to determine the effect of fish oil addition on growth performance and fatty acid composition of eel <em>Anguilla bicolor bicolor</em>. Freswater eel at an initial body weight of 9.90± 0.05 g were maintained in aquarium with volume of 120 L at stocking density of 1 g/L for 40 days. This research applied complete randomized design with four treatments addition of fish oil, i.e. 0%, 5%, 10%, and 15%. All treatments were carried out in triplicate. Feed given as much as 3% of the fish biomass a day for four times at 06:00, 11:00, 16:00, and 21:00. The results showed that the addition of fish oil in the diet have different effects (P&lt;0.05) on specific growth (0.88–1.36%), feed efficiency (30.18–48.53%), protein retention (14.57–20.24%), fat retention (16.77–52.49%), energy retention (12.38–20.20%), and hepatosomatic index (1.72–2.72%) whereas the survival showed no difference (P&gt;0.05) at 100%. In the fatty acid composition total of unsaturated fatty acid composition was 30.91–40.95%, n-3 fatty acids was 6.10–8.19%, and n-6 fatty acids were 6.18–8.19%. In conclusion, the addition of fish oil in the diet of freshwater eel <em>Anguilla bicolor bicolor </em>can be done up to 5% (13% fat content of diet).</p><p> </p><p>Keywords: <em>Anguilla bicolor bicolor</em>, fish oil, growth performance, fatty acid composition</p><br /><p class="NoParagraphStyle" align="center"> </p><p class="NoParagraphStyle" align="center"> </p><p class="NoParagraphStyle" align="center"><strong>ABSTRAK</strong></p><p class="NoParagraphStyle" align="center"> </p><p>Penelitian ini bertujuan untuk menguji pengaruh penambahan minyak ikan terhadap kinerja pertumbuhan dan komposisi asam lemak ikan sidat <em>Anguilla bicolor bicolor</em>. Ikan sidat dengan bobot 9,90±0,05 g dipelihara dalam akuarium dengan volume 120 L pada padat tebar 1 g/L selama 40 hari. Penelitian ini menggunakan rancangan acak lengkap terdiri atas empat perlakuan penambahan minyak ikan pada pakan sebesar 0%, 5%, 15%, dan 15%. Semua perlakuan terdiri atas tiga ulangan. Pakan diberikan sebanyak 3% dari biomassa ikan dan diberikan sebanyak empat kali sehari yaitu pukul 06.00, 11.00, 16.00 dan 21.00. Hasil penelitian menunjukkan bahwa penambahan minyak ikan dalam pakan memberikan pengaruh yang berbeda (P&lt;0,05) terhadap <em>spesific growth rate </em>(0,88– 1,36%), efisiensi pakan (30,18–48,53%), retensi protein (14,57–20,24%), retensi lemak (16,77–52,49%), retensi energi (12,38–20,10%), dan indeks hepatosomatik (1,72–2,72%). Sintasan tidak menunjukkan adanya perbedaan (P&gt;0,05) yaitu 100%. Pada komposisi asam lemak dihasilkan total komposisi asam lemak tidak jenuh 30,91– 40,95%, asam lemak n-3 6,10–8,19%, dan asam lemak n-6 6,18–8,19%. Dengan demikian, dapat disimpulkan bahwa penambahan minyak ikan dalam pakan ikan sidat <em>Anguilla bicolor bicolor </em>dapat dilakukan sampai dengan 5% (kadar lemak pakan 13%).</p><p> </p><p>Kata kunci: <em>Anguilla bicolor bicolor</em>, minyak ikan, kinerja pertumbuhan, komposisi asam lemak</p>

Feed is a source of energy to support the growth and survival of fish. To increase feed consumption to the maximum, it is necessary to add an intake to fish feed to increase the digestibility of fish to feed. One alternative that can be done is by adding (supplements) to the feed. Probiotics are an alternative that can be used as a supplement to aquaculture fish feed. The purpose of this field practice is to determine the effect of adding probiotics on the growth of tilapia. This field practice was carried out in August - October 2020 in Sakatiga Village, Indralaya District, Ogan Ilir Regency, South Sumatera. In infield practice, there were two treatments, namely P0: control (without the addition of probiotics) and P1: treatment with the addition of probiotic EM4 at a dose of 15 ml/kg. The container used is a waring placed in a concrete tub. The stages of the implementation of this field practice start from the preparation of containers, adding probiotics to feed, raising tilapia, and collecting data. The parameters observed were fish growth (length and absolute weight), specific growth rate, feed conversion (FCR), fish survival, and water quality (temperature and pH). The results showed that the results of the P1 treatment gave better results than the P0 treatment, the absolute length growth of 3.71 cm, the absolute weight growth of 6.10 g, the specific growth rate of 5.15% / day, the FCR of 0.74, and survival of 90%. The water quality in both treatments during maintenance was included in the normal standard for tilapia as the temperature of 27.5 - 29.8 °C and pH of 6.7 - 8.4. The addition of probiotics can be proposed as an effort to increase the production of tilapia aquaculture.