Outbreaks of Brachiaria ruziziensis and Brachiaria brizantha intoxications in Brazilian experienced cattle.

Autor: Kono IS; Departamento de Medicina Veterinária Preventiva, Centro de Ciências Agrárias, Campus, Universidade Estadual de Londrina, Londrina, Paraná, Brazil., Faccin TC; Departamento de Medicina Veterinária Preventiva, Centro de Ciências Agrárias, Campus, Universidade Estadual de Londrina, Londrina, Paraná, Brazil., Amorim de Lemos GA; Departamento de Medicina Veterinária Preventiva, Centro de Ciências Agrárias, Campus, Universidade Estadual de Londrina, Londrina, Paraná, Brazil., Di Santis GW; Departamento de Medicina Veterinária Preventiva, Centro de Ciências Agrárias, Campus, Universidade Estadual de Londrina, Londrina, Paraná, Brazil., Bacha FB; Centro Universitário da Grande Dourados - Unigran. Dourados, Mato Grosso do Sul, Brazil., Guerreiro YA; Centro Universitário da Grande Dourados - Unigran. Dourados, Mato Grosso do Sul, Brazil., de Oliveira Gaspar A; Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal de Mato Grosso do Sul. Campo Grande, Mato Grosso do Sul, Brazil., Lee ST; Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, 1150 E. 1400 N., Logan, UT, 84341, USA., de Castro Guizelini C; Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal de Mato Grosso do Sul. Campo Grande, Mato Grosso do Sul, Brazil., Leal CB; Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal de Mato Grosso do Sul. Campo Grande, Mato Grosso do Sul, Brazil., Amaral de Lemos RA; Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal de Mato Grosso do Sul. Campo Grande, Mato Grosso do Sul, Brazil. Electronic address: ricardo.lemos@ufms.br.
Jazyk: angličtina
Zdroj: Toxicon : official journal of the International Society on Toxinology [Toxicon] 2022 Nov; Vol. 219, pp. 106931. Date of Electronic Publication: 2022 Sep 24.
DOI: 10.1016/j.toxicon.2022.106931
Abstrakt: Brachiaria species are some of the most used forage species for raising Brazilian cattle because of their great nutritional value and adaptability to the tropical climate. However, cases of animal intoxication have been described. Animal species, age, genetic resistance, and previous adaptation to the forage can influence the susceptibility to intoxication. Cattle (young or adults), other adult ruminants and animals adapted to consumption (experienced flocks) are considered more resistant. The main clinical presentation is that of hepatogenous photosensitization. Brachiaria brizantha and Brachiaria ruziziensis are considered less toxic. The aim of this study is to describe three outbreaks of intoxication by B. brizantha and B. ruziziensis in experienced cattle, as well as to compare the concentrations of protodioscin in paddocks with and without clinical cases. It was observed that the two forage species are toxic to all age groups of cattle adapted to their consumption, and the concentrations of protodioscin present in the plant cannot be used as the only criterion for determining the occurrence of intoxication.
Competing Interests: 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.
(Copyright © 2022. Published by Elsevier Ltd.)
Databáze: MEDLINE
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