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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Outbreak of polioencephalomalacia in cattle consuming high sulphur diet in Rio Grande do Sul, Brazil

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Author(s):
Paulo H.J. da Cunha [1] ; Paulo M. Bandarra [2] ; Marcelo M. Dias ; Alexandre S. Borges [4] ; David Driemeier [5]
Total Authors: 5
Affiliation:
[1] Universidade Federal de Goiás. Escola de Veterinária. Departamento de Medicina Veterinária - Brasil
[2] Federal do Rio Grande do Sul. Faculdade de Veterinária - Brasil
[4] Universidade Estadual Paulista. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Clínica Veterinária - Brasil
[5] Federal do Rio Grande do Sul. Faculdade de Veterinária - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Pesquisa Veterinária Brasileira; v. 30, n. 8, p. 613-617, 2010-08-00.
Abstract

An outbreak of polioencephalomalacia in cattle caused by ingestion of high sulphur diet, in Rio Grande do Sul, Brazil is described. One group of 30 calves was kept in Italian ryegrass (Lolium multiflorum) pasture and supplemented with concentrate and minerals. Six calves died, necropsy was performed in two of them and liver samples (for lead determination) and fragments of central nervous system were collected. Clinical and neurological examination was performed in one calf and confirmed brain involvement. Sulphur content on dietary components and water, ruminal hydrogen sulfide production in five calves of the same group and PCR from formalin-fixed paraffin-embedded cerebral tissues to detect bovine herpesvirus 5 DNA was perfomed. The total sulphur intake was 0.38% dry matter and the values of ruminal sulfide concentration ranged from 1,000 to 2,500ppm. Lead It was not detected in the liver samples and PCR was negative for bovine herpesvirus 5. The brain lesions were characterized by laminar neuronal necrosis. The clinical signs of cerebrocortical syndrome associated with high ruminal sulfide values, elevated intake of dietary sulphur and histological lesions confirmed that the excess of sulphur caused the polioencephalomacia in these calves. (AU)

FAPESP's process: 06/05836-6 - Meningo-encephalitis caused by HPV-5 and sulfur-induced polioencephalomalacia in bovines: clinical and laboratorial evaluation
Grantee:Alexandre Secorun Borges
Support Opportunities: Regular Research Grants