Lepom P, Kloss H
Academy of Agricultural Sciences of the German Democratic Republic, Institute of Forage Production Paulinenaue.
Mycopathologia. 1988 Jan;101(1):25-9. doi: 10.1007/BF00455665.
A total of 69 samples of hay and straw collected during the winter period of 1984/85 were surveyed for their contamination by Aspergillus versicolor. The percentage of A. versicolor-positive samples was 14.5%. Nineteen A. versicolor strains mainly isolated from roughage were tested for the production of sterigmatocystin. All of the isolates examined were capable of producing different levels of sterigmatocystin on a cracked corn substrate. The majority of these strains were highly toxigenic; 53% of the isolates produced more than 500 mg/kg of sterigmatocystin. These findings suggest that corn is a very suitable substrate for sterigmatocystin production and that particularly in the surface layers of feed stocks and corn silos such toxigenic strains of A. versicolor can produce considerable growth and possibly sterigmatocystin, too.
对1984/85年冬季收集的69份干草和稻草样本进行了杂色曲霉污染情况调查。杂色曲霉阳性样本的百分比为14.5%。对主要从粗饲料中分离出的19株杂色曲霉进行了产杂色曲霉素的检测。所有检测的分离株在破碎玉米培养基上都能够产生不同水平的杂色曲霉素。这些菌株中的大多数具有高毒性；53%的分离株产生的杂色曲霉素超过500毫克/千克。这些发现表明，玉米是生产杂色曲霉素的非常合适的培养基，特别是在饲料原料和玉米青贮料的表层，这样的杂色曲霉产毒菌株能够大量生长，也可能产生杂色曲霉素。
