Clinical observations and acid-base imbalances in sheep during chronic copper poisoning

Autores

  • Enrico Lippi Ortolani Department of Clinical Science, College of Veterinary Medicine, University of São Paulo
  • Carlos Henrique Machado Department of Clinical Science, College of Veterinary Medicine, University of São Paulo
  • Antonio Humberto Hamad Minervino Department of Clinical Science, College of Veterinary Medicine, University of São Paulo
  • Raimundo Alves Barrêto-Júnior Universidade Federal Rural do Semi-Arido
  • Clara Satsuk Mori Department of Clinical Science, College of Veterinary Medicine, University of São Paulo
  • Selwyn Arlington Headley Department of Basic Veterinary Sciences, School of Veterinary Medicine, St. Matthew’s University

DOI:

https://doi.org/10.5433/1679-0359.2011v32n3p1123

Palavras-chave:

Sheep, Cpper toxicosis, Hemolysis, Packed cell volume, Alkalosis, Plasma free hemoglobin.

Resumo

Twelve male sheep were intoxicated with copper and four served as controls. When hemoglobinuria was first diagnosed, the poisoned sheep were randomly distributed into two groups: 4 untreated and 8 tetratiomolybdate-treated. Blood samples and clinical evaluation were performed daily, from the onset of poisoning until the 30th day. Analysis of packed cell volume, plasma free hemoglobin, and blood gas were made. Elevated heart rates and rectal temperature, and reduced respiratory and ruminal movement rates were recorded in the intoxicated group. The poisoned sheep developed mild alkalosis caused by bicarbonate retention, while a short-periodic increase of pCO2 occurred to compensate the ongoing alkalosis. Elevated degree of anemia was directly proportional to heart rate, while high degree of alkalosis was inversely proportional to respiratory rate. Further, there was an elevated positive relationship between plasma free hemoglobin and rectal temperature, and an increase in rectal temperature accompanied a reduced ruminal movement.

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Biografia do Autor

Enrico Lippi Ortolani, Department of Clinical Science, College of Veterinary Medicine, University of São Paulo

Prof. of Department of Clinical Science, College of Veterinary Medicine, University of Sao Paulo. Av. Prof. Dr. Orlando Marques de Paiva, 87 CEP 05508 270 - Cidade Universitária, São Paulo, SP, Brazil.

Carlos Henrique Machado, Department of Clinical Science, College of Veterinary Medicine, University of São Paulo

Prof. of Federal Rural University of Rio de Janeiro, Seropedica, RJ. Brazil.

Antonio Humberto Hamad Minervino, Department of Clinical Science, College of Veterinary Medicine, University of São Paulo

Professor of Institute of biodiversity and Forests, Federal University of Pará West, Santarém, PA, Brazil.

Raimundo Alves Barrêto-Júnior, Universidade Federal Rural do Semi-Arido

Prof. of Federal Rural University of Semi-Arid, Mossoró, RN, Brazil.

Clara Satsuk Mori, Department of Clinical Science, College of Veterinary Medicine, University of São Paulo

Technician of Department of Clinical Science, College of Veterinary Medicine, University of Sao Paulo, São Paulo, SP, Brazil.

Selwyn Arlington Headley, Department of Basic Veterinary Sciences, School of Veterinary Medicine, St. Matthew’s University

Prof. of Department of Basic Veterinary Sciences, School of Veterinary Medicine, St. Matthew’s University, Grand Cayman, Cayman Islands, UK

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Publicado

2011-08-25

Como Citar

Ortolani, E. L., Machado, C. H., Minervino, A. H. H., Barrêto-Júnior, R. A., Mori, C. S., & Headley, S. A. (2011). Clinical observations and acid-base imbalances in sheep during chronic copper poisoning. Semina: Ciências Agrárias, 32(3), 1123–1132. https://doi.org/10.5433/1679-0359.2011v32n3p1123

Edição

v. 32 n. 3 (2011)

Seção

Artigos

Licença

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