Mycotoxins can cause serious health problems in animals and their presence in agricultural commodities may result in serious economic losses. It has been estimated that mycotoxin-contaminated grains cost grain handlers and the livestock industry several hundred million dollars annually.
Feed contamination is a big problem for animal feed producers and therefore, regular monitoring of mycotoxins is necessary. Mycotoxin risk management starts with proper mycotoxin diagnostics. As the most critical step in this process, feed mills should ensure proper sampling and monitoring of inbound ingredients and final products for the presence of possible mycotoxins.
In this study the corn and animal feed samples (pigs and poultry feed) received from different regions of Vietnam between November 2021 and April 2022 were screened for their mycotoxin contamination levels at PATENT CO. These samples were analysed by LC-MS/MS triple quadrupole (Agilent 6460 series) using a multi-mycotoxin method for quantification of mycotoxins present. These mycotoxins included Aflatoxin B, (AFB,), B, (AFB,), G, (AFG,), and G, (AFG,), Ochratoxin A (OTA), Zearalenone (ZEN), Deoxynivalenol (DON), Fumonisin B, (FB,), B, (FB,), B, (FB,), Diacetoxyscirpenol (DAS), T-2 and HT-2 toxins. The results of this survey are presented as below.
1. Animal feed samples from Vietnam:
- In 2021 43 % animal feed samples from Vietnam were not contaminated with mycotoxins.
- 7% samples were contaminated with one mycotoxin and 50% feed samples were contaminated with more than one mycotoxin. (Fig 1).
- Total, 57% of the tested poultry and pig feed samples were contaminated with one or more than one mycotoxin.
Figure 1. Number of mycotoxins per animal feed (poultry and pigs) sample from Vietnam
Table 1. Mycotoxin levels detected (ppb) in animal feed (poultry and pigs) samples from Vietnam
2. Corn Harvest Vietnam 2021
Fumonisins were detected in 46 % samples, DON in 35 %, ZEN in 26%, Aflatoxins in 33%, OTA on 17%, T-2 in 11 % and DAS in 25 samples.
- In 2021, 21 % corn samples from Vietnam were not contaminated with mycotoxins.
- 12 % samples were contaminated with one mycotoxin and 67% corn samples were contaminated with more than one mycotoxin. (Fig 1).
- Total, 79% of the tested corn samples were contaminated with one or more than one mycotoxin.
Figure 2. Number of mycotoxins per corn sample from Vietnam harvested in 2021
Table 2. Mycotoxin levels detected (ppb) in corn samples from Vietnam in 2021
Fumonisins were detected in 75 % corn sample, Aflatoxins in 47%, ZEN in 19%, DON in 21 %, and DAS was detected din 7 % corn sample analyzed using LC-MS/MS (Table 2).
Conclusion:
Animal feed samples, Vietnam: These results for animal feed samples from Vietnam demonstrated the co-occurrence of (Table 1) mycotoxins and fumonisins and aflatoxins are the dominant mycotoxins detected.
Corn samples 2021, Vietnam: The analysis of corn samples using LC-MS/MS showed the co-occurrence of (Table 2) more than one mycotoxin and fumonisins and aflatoxins are the dominant mycotoxins detected.
Souce: Patent Co
(https://mycotoxinsite.com/2021-global-mycotoxin-survey-of-corn-harvested-from-19-countries/?lang=en)
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