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Hydrocyanic acid poisoning of cattle associated with Sudax grass

Authors: Gibb MC, Catalinac S, Carbery JT, Carter RG
Publication: New Zealand Veterinary Journal, Volume 22, Issue 7, pp 127, Jul 1974
Publisher: Taylor and Francis

Animal type: Cattle, Livestock, Production animal, Ruminant
Subject Terms: Toxicology, Poisoning - chemical, Poisoning - plant
Article class: Correspondence

Abstract: In recent years sudax grass has become popular as a summer feed-crop in Northland. Sudax grass is a hybrid between Sudan grass (Sorghum sudanense) and sorghum (Sorghum vulgare). Both of these grasses are well known for their potential toxicity, due to an ability to accumulate high concentrations of cyanogenetic glucosides. Hydrocyanic acid inhibits the release of oxygen from haemoglobin, thus producing histotoxic anoxia. In February and March of this year, the Northern Wairoa Veterinary Club dealt with twelve outbreaks of hydrocyanic acid poisoning in dairy cows grazing sudax grass…

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