Shrimp fed 0.3% Olextra for 45 days showed 89.38% survival versus 79.06% in controls, with no significant weight or FCR difference. Survival after V. parahaemolyticus or hypoxia challenge improved, and Vibrio counts fell in hepatopancreas and intestine.
Key findings
- The 0.3% diet increased overall survival by roughly 10 percentage points, reduced tissue Vibrio and improved both challenge survivals without significant growth or FCR gain.
Why this matters globally
Using an agricultural by-product could connect circular economy with reduced losses from disease and hypoxia in global shrimp aquaculture.
Thai researcher contribution
The Kasetsart University team ran nutrition and challenge experiments in Pacific white shrimp, a major Thai aquaculture species.
Limitations to consider
Sample size, replication, randomisation, masking and full challenge effects are not reported in the abstract. Short controlled trials do not establish commercial-pond economics, residues or ecological effects.