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All Journal Sains Natural: Journal of Biology and Chemistry Nekton
Zakiyyah Nur Inayah
PSDKU Universitas Brawijaya Kediri
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Environmental Science Social Sciences

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Liver Histological Response of Female Broodstock Catfish to Dietary Soybean Meal Supplementation VIKA MAULIDIYAH; Rizky Kusma Pratiwi; Muhamad Dwi Cahya; Zakiyyah Nur Inayah; Vina Nur Nadiro; Anissa Aprilia Nurkhasanah; Maura Yasmin Dhia; Fajar Maulana Akmal Firdaus
Sains Natural: Journal of Biology and Chemistry Vol. 16 No. 2 (2026): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v16i2.970

Abstract

Feed is one of the key factors in fish culture, including the use of plant-based ingredients such as soybean meal as an alternative protein source that may affect the physiological condition of organs, particularly the liver. This study aimed to analyse the effect of soybean meal supplementation in feed on the liver histological response of catfish (Clarias sp.). Liver histological characteristics were evaluated in three treatment groups: a control group (without soybean meal supplementation),  5% soybean meal-supplemented diet, and 10% soybean meal-supplemented diet. The results showed that the control group exhibited a relatively normal liver histological structure, characterised by an orderly arrangement of hepatocytes, centrally located nuclei, and clearly visible sinusoids. In the 5% soybean meal treatment, more pronounced histological alterations were observed, particularly cytoplasmic vacuolization of hepatocytes, indicating moderate to severe steatosis. Meanwhile, hepatocyte vacuolization was also observed in the 10% soybean meal treatment, but with a severity ranging from mild to moderate compared with the 5% treatment. These findings indicate that dietary soybean meal supplementation affects liver histology in catfish through a non-linear response pattern. The 5% dose caused greater tissue alterations than the 10% dose, which may be associated with the adaptive response of hepatocytes to feed exposure. These findings indicate that the use of soybean meal in fish feed should consider an appropriate dosage to maintain liver health.
Identification and Role of Microalgae Found in Catfish (Clarias gariepinus) Cultivation Pond Zakiyyah Nur Inayah; Rahmat Ardi Kurniawan; Muhamad Fajar Aulia; Adif Pratama; R Adharyan Islamy
Nekton Vol 5 No 2 (2025): Nekton
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v5i2.1096

Abstract

Microalgae play an essential role in aquaculture as primary producers, serving both as natural feed and as bioindicators for assessing pond water quality. The presence of specific microalgal taxa is crucial for evaluating aquatic conditions and identifying potential natural feed sources. This study aimed to identify microalgal species found in African catfish (Clarias gariepinus) culture ponds and to determine their ecological roles. A descriptive survey method was applied. Water samples were collected using a plankton net from three catfish culture ponds during August–September 2025. Identified microalgae were morphologically classified and analyzed for their potential as bioindicators based on literature review using Palmer’s Pollution Index. The results revealed 16 genera belonging to three divisions: Bacillariophyta (diatoms), Chlorophyta (green algae), and Cyanophyta (blue-green algae). Two genera of Bacillariophyta were identified—Aulacoseira and Synedra. Chlorophyta was the most dominant division, comprising 11 genera: Actinastrum, Coelastrum, Dictyosphaerium, Golenkinia, Micractinium, Oocystis, Pandorina, Pediastrum, Scenedesmus, Staurastrum, and Ulothrix. Cyanophyta included three genera—Anabaena, Aphanocapsa, and Spirulina. Among these, Scenedesmus and Pediastrum (Chlorophyta) are commonly used as natural feed, whereas Cyanophyta members are often utilized as water-quality bioindicators. The diversity and abundance of microalgae observed in the catfish ponds indicate organic enrichment, yet they also provide valuable potential as natural feed sources.
Co-Authors Adif Pratama Anissa Aprilia Nurkhasanah Fajar Maulana Akmal Firdaus Maura Yasmin Dhia Muhamad Dwi Cahya Muhamad Fajar Aulia R Adharyan Islamy Rahmat Ardi Kurniawan Rizky Kusma Pratiwi Vika Maulidiyah Vina Nur Nadiro