DIETARY SUPPLEMENTATION OF Sargassum johnsonii ENHANCES DISEASE RESISTANCE AGAINST Aeromonas hydrophila IN Labeo rohita FRY
Year: 2026
Type: article
Abstract: Aquaculture intensification has led to more bacterial diseases, causing significant economic losses and lower productivity. This study examined how adding the brown seaweed Sargassum johnsonii to the diet affects the disease resistance of Labeo rohita fry against Aeromonas hydrophila. Five diets with 0% (T0), 3% (T1), 6% (T2), 9% (T3), and 12% (T4) S. johnsonii powder were given to L. rohita fry for 60 days. After the feeding trial, fish were exposed to A. hydrophila (1 × 10⁶ cells mL-1 ), and mortality was tracked for ten days. Survival percentage, cumulative mortality, and relative percent survival (RPS) were calculated. The results showed a significant increase in disease resistance in seaweed-fed groups compared to the control. The highest survival (90%), lowest mortality (10%), and greatest RPS (75%) were seen in fish fed the diet with 9% S. johnsonii. The control group had the lowest survival (60%) and highest mortality (40%). The findings suggest that adding S. johnsonii to the diet boosts the resistance of L. rohita fry against A. hydrophila infection, with 9% being the best level for improving disease resistance
Source: PLANT ARCHIVES
Language: English
Subfield: Immunology
Field: Immunology and Microbiology
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W7204274716