World Aquaculture Society Meetings

facebook

Your browser does not support the most current secure communications protocol. The World Aquaculture Society is committed to the security of your private information. In order to accept credit card data on this site we are recquired to be in compliance with Payment Card Industry (PCI) standards. Current PCI standards will not allow us to accept traffic from browsers that do not support TLS 1.2 after June 30, 2018. We are alerting you to the important need to update your browser. Changes to our web server made on or before June 30, 2018 will make was.org unavailable with the browser you are currently using. [More..]

Add To Calendar 29/04/2016 08:50:0029/04/2016 09:10:00Africa/JohannesburgAsian-Pacific Aquaculture 2016An efficient mycotoxin analysis to Aquaculture Feeds Crystal 1The World Aquaculture Societyjohnc@was.orgfalseanrl65yqlzh3g1q0dme13067DD/MM/YYYY

An efficient mycotoxin analysis to Aquaculture Feeds

Kai-J. Kuehlmann*, Ramakanta Nayak, Attila Honfi, Paul Koolen
 
Nutreco Asia Co. Ltd.
Trouw Nutrition Thailand
10110 Bangkok, Thailand
kai.kuhelmann@trouwnutrition.com  

Aquaculture feeds for omnivorous fish or shrimps nowadays contain mainly plant based proteins from corn, soybean meal, canola, rice bran, cassava, cottonseed or wheat as cost efficient alternative to fishmeal. As plant ingredients, however, are at high risk of mycotoxin contamination, a mycotoxin risk assessment with appropriate protection strategies to farmed aquaculture species needs to be in place.

Mycotoxins are a structurally diverse group naturally produced mainly by the secondary metabolites of filamentous fungi and are resistant to temperature (extrusion, pelleting) and decomposition (digestion) designed to remain in feeds intoxicating aquaculture farmed species. Poor storage conditions, high temperature and humidity are the main factors triggering mould growth with concomitant mycotoxin development in plant raw materials, such as corn, wheat, barley, rice, soy, canola, cassava and sunflower meals or DDGS (Distiller's Dried Grains with Soluble) and feed. As these conditions commonly occur throughout Asia, fish or shrimps fed with mycotoxin-contaminated feeds often show reduced growth performance, with increased immune suppression and mortalities.

Knowing that linking mycotoxin contaminated aquafeeds directly to fish or shrimp diseases is more difficult for aquaculture compared to livestock farming, feed raw materials need to be highly and efficiently quality-monitored. Aquafeeds containing aflatoxin (Afla), deoxynivalenol (DON), ochratoxin A (OTA), zearalenone (ZEN) or fumonisins (FUM) are standard- analyzed by HPLC or ELISA methods often taking several days until results are available.

A quicker method of quantifying the most common six mycotoxins is the Mycomaster. The analysis is easy to use on-site at the feed mill and provides reliable quantitative reading of the contamination levels in plant protein raw materials and complete feed. The low cost, rapid and reliable results provided by Mycomaster allows for more frequent analyses, compared with traditional analyses methods giving the feed manufacturers an efficient tool for high quality aquaculture raw material and feed assurance.

Copyright © 2001-2018 World Aquaculture Society All Rights Reserved.