China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (12): 4451-4459.doi: 10.16431/j.cnki.1671-7236.2021.12.013

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Analysis of Mycotoxin Contamination and Animal Health Risk Assessment in Silage Corn of China

ZHANG Xinxin1, ZHANG Fujin1, ZHANG Yao2, GUO Zhigang1, SUN Lin1, LIU Guanghua1, SHA Na2   

  1. 1. Inner Mongolia Academy of Agriculture and Animal Husbandry Science, Hohhot 010030, China,;
    2. Erdos Environmental Protection Center Monitoring Station, Erdos 017000, China
  • Received:2021-04-16 Online:2021-12-20 Published:2021-12-02

Abstract: In order to find out the pollution status of mycotoxins and its impact on animals in silage corn of China, 251 samples (90 copies of whole plant corn and 161 copies of silage corn) were collected from differernt large-scale pastures located in 28 counties of 9 provinces (autonomous regions), including Northeast (Heilongjiang), Northwest (Inner Mongolia, Shanxi), Huang-Huai-Hai (Henan, Hebei), Central (Jiangsu), Southwest (Guizhou, Sichuan) and Tibet.The contents of 12 types of mycotoxins, such as aflatoxin (AFs), vomiting toxin (DON), fumonisin B (FB) and zearalenone (ZEN) were measured and the animal health risk was assessed by exposure assessment.The results showed that:①With referencing to feed hygiene standard of China, the over-standard rate of ZEN was 1.19%.When silage corn was used as the main roughage for lactating dairy cows, the over-standard rate of FB and AFs were 23.90% and 13.94%, respectively, referencing to the feed safety standards of FDA and EC accordingly.②There was no significant difference in the content of mycotoxins between whole plant corn and whole plant corn silage (P>0.05).③The detected type and contents of mycotoxins in Huang-Huai-Hai area, Central area and Southwest area were higher, and the content was lower in Tibet.④Among different animals, the order of animal health risk was lamb>calf>dairy cow, and the order of mycotoxin risk in lamb was AFs>ZEN>DON>FB when fed with the polluted corn silage.In summary, the over-standard rates of mycotoxins in whole plant corn and whole plant corn silage in China were low.The relatively polluted areas were Huang-Huai-Hai, Central and Southwest China.In these areas, when silage corn was used as the main roughage for lactating dairy cows, the over-standard risk was higher;When corn silage was used as the main roughage for young animals, AFs contamination might bring animal health risks.

Key words: mycotoxins; silage corn; risk assessment

CLC Number: