Equis ISSN 2398-2977

Sudan Grass (Sorghum spp)

Synonym(s): S. bicolor, S. almum, Johnson grass S. halapense, S. sudanense S. vulgare var. sudanense, Milo, Sorghum, Shattercane,

Contributor(s): Anthony Knight, Vetstream Ltd

Introduction

  • Sudan grass is a coarse stemmed grass, native to Africa and widely cultivated in North America, especially in the southern States as a dry land forage crop.
  • An aggressive, coarse, weedy grass found along roadsides or uncultivated areas.
  • Broad-leafed, annual or perennial erect rass growing to 2 m in height, with large multi-branched seed heads   Sudan Grass (Sorghum spp) 01    Sudan Grass (Sorghum spp) 02  .
  • Seeds are yellow to purple.
  • All parts of the plant are toxic.
  • No treatment available to reverse neural damage.
  • Ensure removal of the plant from pastures.
  • Most horses will avoid the plant unless grazing is particularly poor.

Toxicity

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Clinical signs

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Diagnosis

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Treatment

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Prognosis

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Adams L G, Dollahite J W, Romane W M, Sullard T L & Bridges C H (1969) Cystitis and ataxia associated with sorghum ingestion in horses. JAVMA 155, 518-524 PubMed.
  • McKenzie R A & McMicking L I (1977) Ataxia and urinary incontinence in cattle grazing sorghum. Austr Vet J 53, 496-497 PubMed.
  • Knight P R (1968) Equine cystitis and ataxia associated with grazing pastures dominated by sorghum species. Aust Vet J 44, 257 PubMed.

Other sources of information

  • Knight A & Hall J (2004) The 10 Most Dangerous Plants for Horses. Equus 320, 71-81.
  • Knight A P & Walter R G (2001) A Guide to Plant Poisoning of Animals in North America. Teton New Media, USA.
  • Burrows G E & Tyrl R J (2001) Toxic Plants of North America. Iowa State University Press, USA.
  • Allison K (1999) A Guide to Plants Poisonous to Horses. J A Allen & Co Ltd. ISBN: 0851316980.
  • Cooper M R & Johnson A W (1998) Poisonous Plants and Fungi - An Illustrated Guide. The Stationery Office. ISBN: 0112429815.
  • Allison K & Day C (1997) A Guide to Plants Poisonous to Horses. British Association of Holistic Nutrition and Medicine.

Organization(s)

  • Cornell University - Poisonous Plants Informational Database. Website: www.ansci.cornell.edu/plants.
  • Guide to Poisonous Plants. Website: www.southcampus.colostate.edu/poisonous_plants.
  • ToxicologyOnline.com. Website: www.toxonline.com.
  • Veterinary Poisons Information Service (VPIS), London Center, Medical Toxicology Unit, Avonley Road, London SE14 5ER, UK. Tel: +44 (0)20 7635 9195; Fax: +44 (0)20 7771 5309.
  • Veterinary Poisons Information Service (VPIS), Leeds Center, The General Infirmary, Great George Street, Leeds LS1 3EX, UK. Tel: +44 (0)113 245 0530; Fax: +44 (0)113 244 5849.


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