Fusarium crookwellense-produced zearalenone in maize stubble in the field

Authors: Chayer R, Dosanto M, Escande A, Lopez TA, Salomon ML, Gerpe O
Publication: New Zealand Veterinary Journal, Volume 45, Issue 6, pp 251-253, Dec 1997
Publisher: Taylor and Francis

Animal type: Livestock
Subject Terms: Diet/rations/food, Mycotoxicosis, Liver/hepatic disease, Disease/defect, Fungal/yeast, Nutrition/metabolism, Pasture/crop, Reproduction - hormones
Article class: Short Communication

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Abstract: Waste grain and vegetative material (stems and leaves) collected from a maize field several months after harvest was analysed by bi-dimensional thin layer chromatography for the presence of aflatoxins, deoxynivalenol, ochratoxin A, sterigmatocystin, T-2 toxin and zearalenone. Deoxinivalenol (0.7 mg/kg) and T-2 toxin (4.1 mg/kg) were found in the grain and zearalenone (3.0 mg/ kg) was found in the stem and leaf. No other toxins were detected. The stubble was examined for the presence of potentially toxigenic Fusarium species, and F. poae, F. moniliforme var. subglutinans and F. crookwellense were isolated and identified. When these isolates were cultured on cracked corn, only F. crookwellense was found to produce micotoxins and then only zearalenone was detected. As corn stubble is commonly grazed in Argentina and in other countries, these findings identify a further source of mycotoxins that may adversely affect animal health and productivity.

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