Abstract: This study aimed to understand the pollution status of aflatoxin B₁, T-2 toxin, ochratoxin A and fumonisins （B₁+B₂） in plant origin feed raw materials, guide and help feed production enterprises as well as livestock and poultry rearing enterprises to carry out the pollution prevention and control of mycotoxins, avoid the harms brought by mycotoxins to feed products as well as livestock and poultry products, and reduce the economic losses. In the year of 2020, a total of 60 samples from 16 kinds of plant origin feed raw materials were collected and tested by LC-MS/MS and IAC-HPLC according to the national standard of ′Feed Hygiene Standard′ （GB 13078-2017）. The results showed that the pollution status of aflatoxin B₁, T-2 toxin, ochratoxin A and fumonisins （B₁+B₂） in the 16 kinds of plant origin feed raw materials varied. The detection rates of aflatoxin B₁, ochratoxin A and fumonisins （B₁+B₂） were 13.30%, 1.60% and 31.60%, respectively, and their maximum detection values were 318.00 μg/kg, 5.70 μg/kg and 50.66 mg/kg, respectively; the T-2 toxin was not observed. According to the test results, the pollution caused by aflatoxin B₁, ochratoxin A and fumonisins （B₁+B₂） in the 16 kinds of plant origin feed raw materials was found, and the overall pollution rate was 33.30%. The contents of aflatoxin B₁ of two kinds of plant origin feed raw materials exceeded the standard, while the contents of the other mycotoxins in the tested samples were all within the allowable range. Furthermore, the pollution rate was not proportional to the exceeded rate. It was indicated that the mycotoxins contamination was common in plant origin feed raw materials, which posed serious impacts and potential hazards to feed products, livestock and poultry products, and consumption safety as well. In view of this problem, some suggestions on quality and safety control of plant origin feed raw materials were put forward, in hoping to provide references for control of mycotoxins contamination in feed raw materials.

Key words: plant origin feed raw materials, mycotoxins, pollution status investigation, detection and analysis, control suggestions