A preliminary survey of zearalenone and other mycotoxins in Australian silage and pasture

Reed, K. F. M. and Moore, D. D. (2009) A preliminary survey of zearalenone and other mycotoxins in Australian silage and pasture. Animal Production Science, 49 8: 696-703. doi:10.1071/EA08164


Author Reed, K. F. M.
Moore, D. D.
Title A preliminary survey of zearalenone and other mycotoxins in Australian silage and pasture
Journal name Animal Production Science   Check publisher's open access policy
ISSN 1836-5787
1836-5787
Publication date 2009-01-01
Sub-type Article (original research)
DOI 10.1071/EA08164
Volume 49
Issue 8
Start page 696
End page 703
Total pages 8
Place of publication Collingwood, Vic., Australia
Publisher CSIRO Publishing
Language eng
Formatted abstract
The oestrogenic mycotoxin zearalenone can occur in pasture and fodder infected with various Fusarium spp., and at concentrations exceeding 1 mg/kg, it has been associated with a reduction in the fertility of grazing ruminants. Pasture and fodder samples collected in four small studies from cattle and sheep farms in south-eastern Australia were tested for zearalenone and other mycotoxins using high performance liquid chromatography. Zearalenone in winter pasture was detected (viz. >0.1 and up to 5.0 mg/kg DM) in 8 of 22 pastures; three exceeded the tolerance concentration, 1.0 mg/kg. Zearalenone was detected in 15 of 24 samples of silage that were submitted by farmers for nutritional assessment, but that were not suspected of toxicity; 12 were in the range 1.0–80 mg/kg. Zearalenone was correlated with crude protein concentration (r = 0.59, P < 0.05); it was high in legume-dominant compared with grass-dominant silage (P < 0.04). In a separate investigation of 28 feed samples submitted for mycotoxin screening by nutritionists/veterinarians, zearalenone was detected in 7 of 13 pastures, in two of two hays and 9 of 13 silages (6 of 28 exceeded 1 mg/kg). Deoxynivalenol was detected in 6 of 13 pastures, one of two hays and 10 of 13 silages. Deoxynivalenol was high (0.64–1.76 mg/kg) in five silages of excellent/average appearance. Ergovaline and lolitrem B were detected at above tolerable concentrations in four of eight perennial ryegrass-dominant samples examined. Aflatoxins, ochratoxin A and fumonisins were detected in some samples although the concentrations were low. Two samples contained either zearalenone and ergovaline, or zearalenone and deoxynivalenol, where both mycotoxins exceeded tolerable concentrations.
Keyword Aflatoxins
Deoxynivalenol
Ergovaline fumonisins
Fusarium
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
 
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Created: Thu, 03 Sep 2009, 17:46:38 EST by Mr Andrew Martlew on behalf of School of Agriculture and Food Sciences