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Journal : Journal of Fish Health

Growth of African Catfish (Clarias gariepinus) Cultured Using the Biofloc System at Different Stocking Densities Aisyah, Nur; Scabra, Andre Rachmat; Mulyani, Laily Fitriani
Journal of Fish Health Vol. 5 No. 3 (2025): Journal of Fish Health
Publisher : Aquaculture Department, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v5i3.7917

Abstract

The cultivation of African catfish (Clarias gariepinus) using a biofloc system is an aquaculture technology that integrates waste management and the production of natural feed in situ, thereby enhancing productivity efficiently. This research aimed to evaluate the effect of EM4 probiotic application in a biofloc system on the growth and survival rate of catfish under different stocking densities. The experiment was conducted using a Completely Randomized Design (CRD) with four stocking density treatments: P1 (30 fish/30 L), P2 (40 fish/30 L), P3 (50 fish/30 L), and P4 (60 fish/30 L), each with three replications. Observed parameters included absolute weight and length growth, floc content, hematocrit, hemoglobin, erythrocytes, leukocytes, differential leukocytes and water quality parameters. The treatment P4 showed the most notable effects, with a final absolute weight gain of 11.66 grams and an absolute length increase of 8.11 cm. Furthermore, the probiotic addition had a significant impact on erythrocyte levels and differential leukocyte counts. In contrast, the use of probiotics in the biofloc system did not result in significant differences in hematocrit levels, total leukocyte counts, or biofloc volume.
Effectiveness of Garcinia mangostana Mangosteen Peel Extract in Inhibiting Gram-Negative Bacteria in Lobster (Panulirus homarus) Aquaculture Waters Muahiddah, Nuri; Alim, Sahrul; Mulyani, Laily Fitriani
Journal of Fish Health Vol. 4 No. 1 (2024): Journal of Fish Health
Publisher : Aquaculture Department, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v4i1.4918

Abstract

This study aims to examine the effectiveness of mangosteen peel extract (Garcinia mangostana) in inhibiting the growth of Gram-negative bacteria in lobster (Panulirus homarus) aquaculture waters. The main problem in lobster farming is bacterial infections that can cause disease and mass mortality. Mangosteen peel extract is known to contain potent antimicrobial compounds. This research employs an experimental method with various concentrations of mangosteen peel extract to test its effect on the growth of Gram-negative bacteria. Based on result, the mangosteen peel inhibition zone against Gram-negative bacteria from lobster aquaculture waters measures 0.25±0.05 cm (25 mm), indicating weak inhibition activity. This suggests that mangosteen peel could be used as an immunostimulant alternative to antibiotics in combating diseases in lobsters. Further research is needed to determine the optimal dosage of mangosteen peel extract to achieve strong inhibition activity against bacteria.
Growth of African Catfish (Clarias gariepinus) Cultured Using the Biofloc System at Different Stocking Densities Aisyah, Nur; Scabra, Andre Rachmat; Mulyani, Laily Fitriani
Journal of Fish Health Vol. 5 No. 3 (2025): Journal of Fish Health
Publisher : Aquaculture Department, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v5i3.7917

Abstract

The cultivation of African catfish (Clarias gariepinus) using a biofloc system is an aquaculture technology that integrates waste management and the production of natural feed in situ, thereby enhancing productivity efficiently. This research aimed to evaluate the effect of EM4 probiotic application in a biofloc system on the growth and survival rate of catfish under different stocking densities. The experiment was conducted using a Completely Randomized Design (CRD) with four stocking density treatments: P1 (30 fish/30 L), P2 (40 fish/30 L), P3 (50 fish/30 L), and P4 (60 fish/30 L), each with three replications. Observed parameters included absolute weight and length growth, floc content, hematocrit, hemoglobin, erythrocytes, leukocytes, differential leukocytes and water quality parameters. The treatment P4 showed the most notable effects, with a final absolute weight gain of 11.66 grams and an absolute length increase of 8.11 cm. Furthermore, the probiotic addition had a significant impact on erythrocyte levels and differential leukocyte counts. In contrast, the use of probiotics in the biofloc system did not result in significant differences in hematocrit levels, total leukocyte counts, or biofloc volume.
Effectiveness of Cinnamon (Cinnamomum burmannii) Leaf Extract on Growth and Meat Quality of Farmed Fish: A Review Rahmadani, Thoy Batun Citra; Mulyani, Laily Fitriani; Sumiana, I Kadek
Journal of Fish Health Vol. 5 No. 4 (2025): Journal of Fish Health
Publisher : Aquaculture Department, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v5i4.8974

Abstract

Aquaculture continues to expand globally, requiring natural and sustainable feed additives to enhance fish growth and meat quality. Cinnamon (Cinnamomum burmannii) leaf extract contains diverse bioactive compounds, including cinnamaldehyde, flavonoids, polyphenols, and terpenoids, which possess antioxidant, antimicrobial, and growth-promoting properties. This review aims to summarize scientific evidence on the effectiveness of cinnamon leaf extract in improving growth performance and meat quality of farmed fish. A systematic literature review was conducted by analyzing 41 scientific publications obtained from Google Scholar, ProQuest, and Elsevier. The reviewed studies consistently showed that supplementation of cinnamon leaf extract or powder at doses ranging from 0.25–1% in fish feed enhances growth parameters such as Specific Growth Rate, feed efficiency, protein retention, and biomass in species including barramundi, Nile tilapia, common carp, and striped catfish. In addition, the extract significantly improves meat quality by reducing body and meat fat content, enhancing texture, increasing protein levels, and improving sensory attributes such as taste and fillet color. These improvements are attributed to the metabolic, antioxidant, and lipid-modulating mechanisms of the phytochemicals present in cinnamon leaves. Overall, cinnamon leaf extract demonstrates strong potential as a natural, environmentally friendly feed additive that supports both productivity and product quality in modern aquaculture systems.