title: Hybanthus calceolaria poisoning in cattle.
abstract: Hybanthus calceolaria, also known as "papaconha" or "ipepacuanha," is a herbaceous plant found in northeastern Brazil, which is often implicated by farmers as the cause of neurological signs in livestock grazing. Several poisoning outbreaks associated with the ingestion of this plant were observed in cattle in the municipalities of Colônia de Gurguéia in the state of Piauí and Sirinhaém in the state of Pernambuco, Brazil. The main clinical signs were ataxia, recumbency, and myokymia. No significant lesions were observed during necropsy or on histological examination. The disease was experimentally reproduced by the administration of 2 daily doses of 40 g/kg/body weight of the fresh green plant containing fruits. The plants without fruits were nontoxic, which is in accordance with the farmers' information, as it was stated that the poisoning only occurs when the plant is fruiting.
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi).
authors.forename: Fabricio K L
authors.initials: FK
authors.lastname: Carvalho
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi).
authors.forename: Eduardo M
authors.initials: EM
authors.lastname: Nascimento
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi).
authors.forename: Brena P
authors.initials: BP
authors.lastname: Rocha
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi).
authors.forename: Fábio S
authors.initials: FS
authors.lastname: Mendonça
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi).
authors.forename: Josir L A
authors.initials: JL
authors.lastname: Veschi
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi).
authors.forename: Silvana M M S
authors.initials: SM
authors.lastname: Silva
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi).
authors.forename: Rosane M T
authors.initials: RM
authors.lastname: Medeiros
authors.affiliation: Federal University of Campina Grande, Hospital Veterinario, Patos, Paraíba, Brazil (Carvalho, Nascimento, Medeiros, Riet-Correa)Federal University of Pernambuco, Recife, Pernambuco, Brazil (Rocha, Mendonça)Federal University of Piauí, Piauí, Brazil (Silva)Embrapa Semiárido, Centro de Pesquisa Agropecuaria do Tropico Semi-Árido, Brasilia, Federal District, Brazil (Veschi) franklin.riet@pq.cnpq.br.
authors.forename: Franklin
authors.initials: F
authors.lastname: Riet-Correa
mesh_terms: D000818:Animals; D001938:Brazil / Q000453:epidemiology; D002417:Cattle; D002418:Cattle Diseases / Q000139:chemically induced* / Q000453:epidemiology / Q000473:pathology; D004196:Disease Outbreaks / Q000662:veterinary; D010939:Plant Poisoning / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D010947:Plants, Toxic / Q000633:toxicity*; D029649:Violaceae
keywords: Ataxia; cattle; myokymia; papaconha; toxic plants