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Substitution of Fish Meal with Chicken Feather Silage Meal on Feed Can Improve Growth Performance of Striped Catfish (Pangasius hypopthalmus) Diana rachmawati; Istiyanto Samidjan; Dicky Harwanto; Hadi Pranggono
Journal Omni-Akuatika Vol 14, No 3 (2018): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.719 KB) | DOI: 10.20884/1.oa.2018.14.3.455

Abstract

The purpose of this research is to study the effect of substitution of fish meal with silage meal of chicken feathers on feed to protein digestibility, growth and survival rate of striped catfish (Pangasius hypopthalmus). The test fish used is catfish with an average weight of 2.31 ± 0.04 grams /fish. This research used experimental method with Completely Randomized Design, 5 treatments in triplicate. The treatments in this study were substitution of fish meal meal with different dose of chicken feather meal, namely A, B, C, D and E (0%; 25%; 50%; 75% and 100% silage meal of chicken feathers, respectively). Parameters observed included relative growth rate (RGR), feed conversion ratio (FCR), protein efficiency ratio (PER), Apparent Digestibility Coefficient of Protein (ADCP), and survival rate (SR) of catfish. The results showed that the substitution of fish meal with chicken feather silage meal was very significant (P <0.01) to RGR, FCR, PER, and ADCP, but no significant effect (P> 0.05) on SR of catfish. Dose 25% silage chicken feather meal in the feed is the best dose to improve the RGR and ADCP of catfish. Water quality during the study is still within a reasonable range for catfish culture.
Effect of Different Doses of Fermented Organic Feed on the Growth Performance of Oithona sp. in Semi-Mass Culture Condition Suminto Suminto; Diana Chilmawati; Dicky Harwanto
Journal Omni-Akuatika Vol 14, No 3 (2018): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.678 KB) | DOI: 10.20884/1.oa.2018.14.3.456

Abstract

This research was aimed to know the effect of different fermented organic feed on the growth performance of Oithona sp. in semi-mass culture condition. The Oithona sp. cultures were fed with mixed organic fermentation of pulp, bran and fish meal by using probiotic microbes and phytoplankton cells. There were 4 treatments and 4 replicates. Treatment A was the Oithona sp. cultured with added Chaetoceros calcitrans cells without fermented organic feed (0 g ∙ L–1 of medium culture). While B, C, and D were added with the same numbers of that C. calcitrans cells of 2x106 cells ∙ mL–1  and  0.5 g ∙ L–1, 1.0 g ∙ L–1, 1.5 g ∙ L–1 of fermented organic feed, respectively. The results showed that the dosage of fermented organic feed had significantly different effect (P < 0.05) on the growth performance of Oithona sp. culture. The best growth performance of Oithona sp. showed by adding 0.5 g ∙ L–1 of fermented organic feed, with total density of  7.09 ± 0.11 ind ∙ mL–1, population growth rate of  0.116 ± 0.002 ind ∙ d–1 and eggs production of  7.88 ± 0.93 eggs ∙ ind–1  of adult.
PENGARUH EKSTRAK KASAR JAGUNG (Zea mays) SEBAGAI ZAT PENGATUR TUMBUH ALAMI TERHADAP LAJU PERTUMBUHAN Caulerpa racemosa Winda Rahmawati; Dicky Harwanto; Seto Windarto
Jurnal Riset Akuakultur Vol 17, No 2 (2022): (Juni) 2022
Publisher : Politeknik Kelautan dan Perikanan Jembrana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jra.17.2.2022.109-120

Abstract

Caulerpa racemosa atau dikenal dengan nama latoh adalah salah satu komoditas perikanan yang digemari karena memiliki kandungan gizi yang tinggi. Namun, dalam budidaya C. racemosa masih terdapat kendala yaitu produksi yang belum maksimal dan pertumbuhan yang belum optimal. Salah satu cara untuk meningkatkan pertumbuhannya yaitu dengan melakukan perendaman bibit rumput laut menggunakan hormon pertumbuhan dari ekstrak bahan alami. Jagung merupakan salah satu bahan alami yang mengandung hormon pertumbuhan giberelin, sitokinin, dan auksin. Hormon tersebut dapat merangsang pertumbuhan batang dan akar. Tujuan dari penelitian ini adalah untuk mengetahui efektivitas penambahan hormon dengan menggunakan ekstrak kasar jagung terhadap pertumbuhan dan morfologi C. racemosa dan mengetahui lama waktu perendaman terbaik ekstrak kasar jagung terhadap pertumbuhan C. racemosa. Penelitian ini dilakukan dengan menggunakan metode eksperimen dengan Rancangan Acak Lengkap (RAL) yang terdiri dari 4 perlakuan dan 3 kali pengulangan. Perlakuan yang dilakukan yaitu perendaman selama 0 menit (sebagai kontrol) (A), 30 menit (B), 40 menit (C), dan 50 menit (D). Data yang diperoleh selama penelitian meliputi morfologi, pertumbuhan bobot mutlak, laju pertumbuhan spesifik, dan kualitas air. Lama waktu perendaman C. racemosa dalam media ekstrak kasar jagung berpengaruh nyata (P<0,05) terhadap pertumbuhan. Perlakuan B menunjukkan hasil terbaik terhadap pertumbuhan bobot mutlak (123,63 ± 6,55 g) dan laju pertumbuhan spesifik (4,15 ± 0,21% per hari). Perlakuan B memiliki morfologi thalus dan ramulli yang besar serta rimbun. Parameter kualitas air dalam kisaran yang sesuai untuk pertumbuhan C. racemosa.Caulerpa racemosa, known as latoh, is a popular edible green alga due to its high nutritional content and medicinal benefits. However, low quality and slow growth of seed prevented the aquaculture development C. racemosa. Soaking the seaweed seed with growth hormone immersion from extracts of natural ingredients could potentially improve its growth rate. Corn contains growth hormone gibberellins, cytokinins, and auxins. These hormones can stimulate the growth of stems and roots. This study aimed to determine the effectiveness of growth hormones in corn crude extract and the best soaking time of the extract on the growth development and morphology of C. racemosa. This research was conducted using an experimental method with a Completely Randomized Design (CRD) consisting of four treatments with three replicates. The treatments were soaking the seed in corn extract for 0 minutes (as a control) (A), 30 minutes (B), 40 minutes (C), and 50 minutes (D). The data obtained during the study included morphology, absolute weight growth, specific growth rate, and water quality. The duration of immersion of C. racemosa in maize extract media had a significant effect (P<0.05) on growth. Treatment B showed the best results with absolute weight growth and growth rate values of 123.63 ± 6.55 g and 4.15 ± 0.21% per day, respectively. This research successfully determines that corn extract improves the growth of C. racemosa seeds indicated by the large thallus and ramuli of the cultured seaweed.