Early harvest and ensilage of forage sorghum infected with ergot (Claviceps africana) reduces the risk of livestock poisoning

Article

Blaney, B. J., Ryley, M. J. and Boucher, B. D.. 2010. "Early harvest and ensilage of forage sorghum infected with ergot (Claviceps africana) reduces the risk of livestock poisoning." Australian Veterinary Journal. 88 (8), pp. 311-312. https://doi.org/10.1111/j.1751-0813.2010.00590.x
Article Title

Early harvest and ensilage of forage sorghum infected with ergot (Claviceps africana) reduces the risk of livestock poisoning

ERA Journal ID5499
Article CategoryArticle
AuthorsBlaney, B. J. (Author), Ryley, M. J. (Author) and Boucher, B. D. (Author)
Journal TitleAustralian Veterinary Journal
Journal Citation88 (8), pp. 311-312
Number of Pages2
Year2010
Place of PublicationChichester, West Sussex. United Kingdom
ISSN0005-0423
1751-0813
Digital Object Identifier (DOI)https://doi.org/10.1111/j.1751-0813.2010.00590.x
Web Address (URL)http://onlinelibrary.wiley.com/doi/10.1111/j.1751-0813.2010.00590.x/pdf
Abstract

Sorghum ergot produces dihydroergosine (DHES) and related alkaloids, which cause hyperthermia in cattle. Proportions of infected panicles (grain heads), leaves and stems were determined in two forage sorghum crops extensively infected 2 to 4 weeks prior to sampling and the panicles were assayed for DHES. Composite samples from each crop, plus a third grain variety crop, were coarsely chopped and half of each sealed in plastic buckets for 6 weeks to simulate ensilation. Theworst-infected panicles contained up to 55 mg DHES/kg, but dilution reduced average concentrations of DHES in crops to approximately 1mg/kg, a relatively safe level for cattle. Ensilation significantly (P = 0.043) reduced mean DHES concentrations from 0.85 to 0.46 mg/kg.

Keywordscattle; ergot alkaloid; mycotoxin; silage; sorghum ergot
ANZSRC Field of Research 2020300304. Animal protection (incl. pests and pathogens)
310805. Plant pathology
300409. Crop and pasture protection (incl. pests, diseases and weeds)
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Byline AffiliationsDepartment of Primary Industries and Fisheries, Queensland
Department of Agriculture, Fisheries and Forestry, Queensland
Institution of OriginUniversity of Southern Queensland
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