Chiow Yen Liew
Regional Marketing Manager – Aqua
Greater APAC
dsm-firmenich
Singapore
Chiow Yen is currently the Regional Marketing Manager for Aqua in Greater APAC, dsm-firmenich, where she leads and drives the development of performance solutions for its aqua nutrition program. Her key focus areas include lifetime performance through optimum nutrition and gut health, mycotoxin risk management, digestibility, reducing reliance on marine resources and antimicrobial use. Together with the team, she works to deliver innovative performance solutions to support product quality, extended shelf life, consistent colour and optimal nutritional values. Some targets are providing solutions to reduce environmental footprints of phosphorus and nitrogen, improve water quality for sustainable aquaculture production and making efficient use of natural resources through the use of enzymes.
| Presentation | Risk of Toxins in Shrimp Farming |
Abstract
Toxins in shrimp aquaculture are often overlooked and underestimated despite their profound effects on shrimp health and productivity performance. Major toxin categories affecting shrimp farming include endotoxins, exotoxins, mycotoxins, and environmental toxins.
Endotoxins, primarily from Gram-negative bacterial infections, trigger inflammatory responses, disrupt shrimp’s gut microbiota, hepatopancreas integrity and weaken shrimp immunity, resulting in reduced growth and higher mortality rates. Exotoxins secreted by pathogenic bacteria such as Vibrio species contribute to devastating diseases such as Early Mortality Syndrome (EMS), Acute Hepatopancreatic Necrosis Disease (AHPND), and White Faeces Syndrome (WFS), disrupting digestive and systemic functions leading to poor gut health and immunity.
Mycotoxins contaminants in aquafeed, impair metabolism and organ health, compromising feed efficiency and immune defences. Environmental toxins including heavy metals, pesticides, and harmful algal blooms that can accumulate in shrimp tissues and organs, contribute to the negative effects of shrimp physiological processes.
The presentation will focus on key toxins, explore the sources and impacts of these toxins while discussing practical mitigation strategies to enhance shrimp health, improve productivity, and promote sustainable aquaculture practices.