Spontaneous Crotalaria incana poisoning in cattle in the state of Paraná, Brazil

Authors

  • Gustavo Rodrigues Queiroz Universidade Estadual de Londrina
  • Rita de Cássia Lima Ribeiro Universidade Paranaense
  • Karina Keller Marques da Costa Flaiban Universidade Estadual de Londrina
  • Ana Paula Frederico Rodrigues Loureiro Bracarense Universidade Estadual de Londrina
  • Júlio Augusto Naylor Lisbôa Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0359.2013v34n2p823

Keywords:

Pyrrolizidine alkaloid, Hepatic encephalopathy, Plant poisoning.

Abstract

Plants of genus Crotalaria have been reported as poisonous for many species of domestic animals. The aim of this work is to report, for the first time in Brazil, an outbreak of C. incana poisoning. The outbreak took place in Nova América da Colina County, Northern region of Paraná state, Brazil, causing death of 30 Nelore heifers in a herd of 223 animals, between 3 and 5 years old. The animals were grazing on pasture fully infested with C. incana. The main clinical signs were characteristic of hepatic encephalopathy and consisted of blindness, depression, aggressiveness, recumbency and death in 48 hours. Gama-glutamyltransferase, and alkaline phosphatase activities were increased. The main necropsy findings were liver congestion and evident lobular pattern, increased gall bladder volume and mesentery oedema near gall bladder. Histological exams showed hepatic hemorrhagic centrolobular necrosis, megalocitosis and spongiform degeneration in thalamus. Morbidity and lethality rates were, respectively, 13,45% and 100%. Epidemiological, clinical and pathological findings suggest that C. incana poisoning was the cause of illness.

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Author Biographies

Gustavo Rodrigues Queiroz, Universidade Estadual de Londrina

Médico Veterinário Autônomo.

Rita de Cássia Lima Ribeiro, Universidade Paranaense

Profª Assistente, Hospital Veterinário, Universidade Paranaense, Umuarama, PR.

Karina Keller Marques da Costa Flaiban, Universidade Estadual de Londrina

Profª Adjunta do Deptº de Medicina Veterinária Preventiva, Centro de Ciências Agrárias, Universidade Estadual de Londrina, UEL, Londrina, PR.

Ana Paula Frederico Rodrigues Loureiro Bracarense, Universidade Estadual de Londrina

Profª. Associada do Deptº de Clínicas Veterinárias, CCA/UEL, Londrina, PR.

Júlio Augusto Naylor Lisbôa, Universidade Estadual de Londrina

Prof. Associado do Deptº de Clínicas Veterinárias, CCA/UEL, Londrina, PR.

Published

2013-05-14

How to Cite

Queiroz, G. R., Ribeiro, R. de C. L., Flaiban, K. K. M. da C., Bracarense, A. P. F. R. L., & Lisbôa, J. A. N. (2013). Spontaneous Crotalaria incana poisoning in cattle in the state of Paraná, Brazil. Semina: Ciências Agrárias, 34(2), 823–832. https://doi.org/10.5433/1679-0359.2013v34n2p823

Issue

Section

Case Reports

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