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

Blaney, B. J. and 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. ISSN 0005-0423

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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2010 Australian Veterinary Association. Permanent restricted access to Published version due to publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 05 Jun 2014 01:00
Last Modified: 10 Mar 2015 02:45
Uncontrolled Keywords: cattle; ergot alkaloid; mycotoxin; silage; sorghum ergot
Fields of Research : 07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070205 Animal Protection (Pests and Pathogens)
06 Biological Sciences > 0607 Plant Biology > 060704 Plant Pathology
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: B Economic Development > 83 Animal Production and Animal Primary Products > 8399 Other Animal Production and Animal Primary Products > 839901 Animal Welfare
Identification Number or DOI: 10.1111/j.1751-0813.2010.00590.x
URI: http://eprints.usq.edu.au/id/eprint/25167

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