Analyze Diet
Toxicon : official journal of the International Society on Toxinology2025; 261; 108375; doi: 10.1016/j.toxicon.2025.108375

Sorghum poisoning in ruminants and horses: a review.

Abstract: We reviewed the history, epidemiology, clinical signs, pathology, pathogenesis, treatment, control, and prophylaxis of Sorghum poisoning in livestock. Economic losses in the livestock industry associated with sorghum have been reported since the 19th century. Hyperacute/acute poisoning associated with cyanide (HCN) or nitrate/nitrite frequently occurs in ruminants that consume high quantities of growth and regrowth sorghum after drought, followed by rainfall, respectively. Chronic cystitis-ataxia syndrome primarily affects horses after weeks of grazing on sorghum pastures, while congenital arthrogryposis and axonopathy have been observed in pregnant ewes and cows grazing sorghum sprouts. The hyperacute/acute manifestations result from the blockade of the respiratory chain by cyanide. However, the pathogenesis of chronic exposure leading to spinal cord lesions, as well as the potential teratogenic effects of cyanide, including abortions and limb deformities in both livestock and humans, remains unknown. Sodium thiosulphate is recommended for the treatment of acute poisoning. Prophylaxis for sorghum poisoning includes avoiding grazing on plants younger than seven weeks, removing sorghum from the diet of poisoned animals, and being cautious with sorghum stover after rain due to regrowth risks.
Publication Date: 2025-04-24 PubMed ID: 40286826DOI: 10.1016/j.toxicon.2025.108375Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
  • Journal Article
  • Review

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The study is a comprehensive review of Sorghum poisoning in animals such as ruminants and horses, its history, symptoms, and the treatment and preventive measures.

History and Epidemiology of Sorghum Poisoning

  • The abstract acknowledges that concerns about economic losses in the livestock industry due to sorghum poisoning date back to the 19th century. This indicates the long-standing nature of the problem.

Clinical Signs and Pathology

  • The paper discusses a variety of clinical symptoms and pathologies associated with Sorghum poisoning. These range from Hyperacute/acute poisoning, which results from livestock consuming large amounts of growth and regrowth sorghum, especially after drought followed by rainfall.
  • Chronic cystitis-ataxia syndrome primarily impacts horses after weeks of grazing on sorghum pastures.
  • Congenital issues such as arthrogryposis and axonopathy have been seen in pregnant ewes and cows that graze on sorghum sprouts.

Pathogenesis of Sorghum Poisoning

  • The hyperacute/acute manifestations of poisoning result from the blockade of the respiratory chain by cyanide.
  • The pathogenesis of chronic exposure, which leads to spinal cord lesions, is unknown. Likewise, the possible teratogenic effects of cyanide, including abortions and limb deformities in both livestock and humans, are not yet well-understood.

Treatment and Prophylaxis for Sorghum Poisoning

  • The paper suggests using sodium thiosulphate to treat acute cases of Sorghum poisoning.
  • As for prevention, several strategies are recommended: avoid grazing livestock on plants younger than seven weeks, removal of sorghum from the diet of poisoned animals, and caution with sorghum stover after a rain due to the risks associated with regrowth.

Cite This Article

APA
Vasconcelos de Sousa AL, Riet-Correa F, Botelho de Castro M, Machado M. (2025). Sorghum poisoning in ruminants and horses: a review. Toxicon, 261, 108375. https://doi.org/10.1016/j.toxicon.2025.108375

Publication

ISSN: 1879-3150
NlmUniqueID: 1307333
Country: England
Language: English
Volume: 261
Pages: 108375
PII: S0041-0101(25)00149-7

Researcher Affiliations

Vasconcelos de Sousa, Ana Lívia
  • Programa de Pós-graduação em Ciências Animais, Universidade de Brasília (UnB), Distrito Federal, Brazil; Laboratório de Patologia e Perícia Veterinária, Campus Darcy Ribeiro, Universidade de Brasília (UnB), Distrito Federal, Brazil.
Riet-Correa, Franklin
  • Programa de Pós-graduação em Ciência Animal nos Trópicos, Universidade Federal da Bahia (UFBA), Salvador, Bahia, Brazil.
Botelho de Castro, Márcio
  • Programa de Pós-graduação em Ciências Animais, Universidade de Brasília (UnB), Distrito Federal, Brazil; Laboratório de Patologia e Perícia Veterinária, Campus Darcy Ribeiro, Universidade de Brasília (UnB), Distrito Federal, Brazil.
Machado, Mizael
  • Programa de Pós-graduação em Ciências Animais, Universidade de Brasília (UnB), Distrito Federal, Brazil; Plataforma de Investigación en Salud Animal (PSA), Instituto Nacional de Investigación Agropecuaria (INIA), Tacuarembó, Uruguay. Electronic address: mmachado@inia.org.uy.

Conflict of Interest Statement

Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Citations

This article has been cited 0 times.