aquaculture industry, affecting productivity and economic outcomes. This study explores the potential of selected plant-derived substances as therapeutic agents against EHP infection in Litopenaeus vannamei. Initial toxicity assessments were conducted using standard protocols on Artemia nauplii and post-larval shrimp (PL12) to determine safe concentration thresholds. Subsequently, experimental diets incorporating varying concentrations of plant extracts were administered to EHP-infected shrimp over a defined trial period.
Preliminary findings revealed varied toxicity profiles among the tested plant-derived substances, with several compounds exhibiting different levels of toxicity (Table 1). In efficacy trials, specific extracts showed promising potential in reducing EHP infection levels (Figure 1), with varying impacts observed across different concentrations. However, elevated concentrations of some extracts were associated with reduced shrimp survival rates, indicating a need for further optimization of dosage and treatment duration.
These results suggest that certain plant-derived substances hold promise as therapeutic agents against EHP infection in shrimp. Further long-term studies focusing on growth performance, immune response, and optimal dosing strategies are recommended to validate these findings for practical application in shrimp farming.