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

Autor:	Malcolm Ryley, B. D. Boucher, B. J. Blaney
Rok vydání:	2010
Předmět:	Ergotism General Veterinary Animal feed Silage food and beverages Forage General Medicine Biology medicine.disease Sorghum biology.organism_classification Crop chemistry.chemical_compound chemistry Fodder Agronomy medicine Mycotoxin
Zdroj:	Australian Veterinary Journal. 88:311-312
ISSN:	1751-0813 0005-0423
DOI:	10.1111/j.1751-0813.2010.00590.x
Popis:	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. The worst-infected panicles contained up to 55 mg DHES/kg, but dilution reduced average concentrations of DHES in crops to approximately 1 mg/kg, a relatively safe level for cattle. Ensilation significantly (P = 0.043) reduced mean DHES concentrations from 0.85 to 0.46 mg/kg.
Databáze:	OpenAIRE
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