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All Journal Acta Aquatica: Aquatic Sciences Journal Jurnal Ilmiah Samudra Akuatika
Eva Ayuzar
Program Studi Akuakultur, Fakultas Pertanian, Universitas Malikussaleh
Agriculture, Biological Sciences & Forestry Materials Science & Nanotechnology Other

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Utilization of Fermented Sawdust and Cocopeat as Substrate Media for Tubifex sp. Culture Muhammad Rizki Febrian; Rachmawati Rusydi; Salamah Salamah; Muliani Muliani; Eva Ayuzar; Mahdaliana Mahdaliana
Jurnal Ilmiah Samudra Akuatika Vol 9 No 1 (2025): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v9i1.12899

Abstract

Tubifex worms are freshwater oligochaetes characterized by their bright red color and high nutritional content, consisting of 57% protein, 13.3% fat, 2.04% crude fiber, and 3.6% ash. Their natural populations have declined due to water pollution from waste, which reduces water quality, thus necessitating cultivation efforts. This study aimed to evaluate the effect of fermented sawdust and cocopeat as culture substrates on the biomass, population, and growth rate of Tubifex worms. The experiment was conducted using a Completely Randomized Design (CRD) with a non-factorial model consisting of four treatments and three replications: A (control: 80% mud + 20% chicken manure), B (80% fermented sawdust + 20% chicken manure), C (80% fermented cocopeat + 20% chicken manure), and D (40% fermented sawdust + 40% fermented cocopeat + 20% chicken manure). Analysis of variance (ANOVA) showed that different substrate compositions had a significant effect on biomass, population peak, and growth rate. The best performance was observed in treatment B, which resulted in the highest biomass (13.32 g/container), the highest population peak (120,111 individuals/container on day 40), and the highest growth rate (3.09%). These results indicate that fermented sawdust supplemented with chicken manure is the most effective substrate for enhancing the growth and population of Tubifex worms.
Effect of fish meal substitution with fermented chicken feather meal in the diet on the growth of barramundi (Lates calcarifer) Salamah Salamah; Anjani Dara Puspita; Munawwar Khalil; Mainisa Mainisa; Eva Ayuzar
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 2 (August, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i2.26988

Abstract

Chicken feathers contain about 80–90% protein, but the keratin type is poorly digestible, requiring fermentation. This study aimed to analyze the effect of substituting fish meal with fermented feather meal on the growth and survival of barramundi (Lates calcarifer). The research was conducted from March 8 to April 5, 2025, at the Hatchery and Aquaculture Technology Laboratory, Malikussaleh University. A Completely Randomized Design (CRD) with five treatments and three replications was used: A (0%), B (5%), C (10%), D (15%), and E (20%) substitution levels of fermented feather meal. Parameters observed included feed response, absolute growth in length and weight, feed conversion ratio (FCR), survival rate (SR), water quality, and feed proximate and organoleptic tests. The results showed that substituting fish meal with fermented feather meal significantly affected growth and feed efficiency (P<0.05). The best results were obtained in treatment D (15%) with an average length of 2.02 cm, weight of 2.28 g, FCR of 1.56, and survival rate of 83.33%. Water quality parameters remained within optimal ranges: temperature 25.8–29.1°C, pH 7–8.8, DO 4.6–6.44 ppm, and salinity 15 ppt. Keywords: Barramundi; Chicken Feather Meal; Fermented; Feed; Growth
Co-Authors Anjani Dara Puspita Mahdaliana, Mahdaliana Mainisa Mainisa Muhammad Rizki Febrian Muliani Muliani Munawwar Khalil, Munawwar Rachmawati Rusydi Salamah Salamah Salamah Salamah