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All Journal Journal of Fisheries & Marine
Putri Desi Wulan Sari
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Biochemistry, Genetics & Molecular Biology

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Oil-Adjuvanted Polyvalent Formalin-killed Aeromonas hydrophila Vaccine Enhances Agglutinating Antibodies, Respiratory Burst, and Survival in Giant Gourami Rozi; Wiwiek Tyasningsih; Jola Rahmahani; Eduardus Bimo Aksono; Muchammad Yunus; Mohammad Anam Al-Arif; Suryo Kuncorojakti; Daruti Dinda Nindarwi; Putri Desi Wulan Sari; Nina Nurmalia Dewi; Woro Hastuti Satyantini; Muhammad Browijoyo Santanumurti; Dita Wisudyawati; Mohammad Noor Amal Azmai; Annas Salleh; Gazali Salim; Suwarno, Suwarno
Jurnal Ilmiah Perikanan dan Kelautan Vol. 18 No. 1 (2026): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v18i1.82866

Abstract

Graphical Abstract  Highlight Research Adjuvanted polyvalent FKC elicited the strongest and most sustained multi-arm immune response in Osphronemus goramy compared with monovalent and non-adjuvanted vaccines. The lead formulation combined high agglutinating antibody titres with enhanced NBT respiratory burst, indicating synergistic humoral–innate activation against Aeromonas hydrophila. Polyvalent vaccines did not dilute immunogenicity; instead, strain combination plus adjuvant broadened and amplified immune responsiveness. Longitudinal profiling of il-1β and ifn-γ revealed a stable pro-inflammatory/Th1-like cytokine signature uniquely associated with the adjuvanted polyvalent FKC. The integrated immunological “fingerprint” supports the adjuvanted polyvalent FKC as a rational lead candidate for motile Aeromonas septicaemia control in warm-water gourami aquaculture.   Abstract Motile Aeromonas septicaemia (MAS), predominantly associated with Aeromonas hydrophila, remains a major constraint in giant gourami (Osphronemus goramy) aquaculture. This study evaluated formalin-inactivated A. hydrophila vaccines prepared from MAS-associated field isolates, comparing a monovalent formulation (P2), a non-adjuvanted polyvalent formulation (P3), and an oil-adjuvanted polyvalent formulation (P4) against PBS controls (P1). A total of 240 fish were used (60 per treatment) and assigned to two parallel cohorts (immunology and survival/challenge). Immune endpoints (agglutinating titres, NBT activity, and splenic il-1β and ifn-γ transcription) were assessed on days 7, 14, 21, 35, and 42 post-vaccination. The survival cohort was challenged intraperitoneally at day 21 with a homologous A. hydrophila strain and monitored for 14 days post-challenge. Vaccination was clinically well tolerated and improved survival relative to controls, with P4 showing the highest protection (RPS 81.8%). Agglutinating titres differed by treatment and time; at the peak sampling point (day 35), mean titres in P4 were ~200-fold higher than in P1, and model contrasts indicated significant differences versus controls (p<0.001). Splenic il-1β and ifn-γ transcript levels were higher in vaccinated groups than in controls at later time points. These findings support further evaluation of an oil-adjuvanted polyvalent inactivated A. hydrophila vaccine for gourami, including dose optimisation, extended safety assessment, heterologous challenge, and field validation.
Co-Authors Aksono HP., Eduardus Bimo Al arif, Mohammad Anam Annas Salleh Daruti Dinda Nindarwi Dewi, Nina Nurmalia Dita Wisudyawati Gazali Salim Kuncorojakti, Suryo Mohammad Noor Amal Azmai Muchammad Yunus Rahmahani, Jola Rozi Santanumurti, Muhammad Browijoyo Suwarno Suwarno Wiwiek Tyasningsih Woro Hastuti Setyantini