Identification of cattle poisoning by Bifenthrin via earwax analysis by HS/GC-MS.

Autor: Gonçalves Barbosa JM; Laboratory of Extraction and Separation Methods, Institute of Chemistry, Federal University of Goiás, Goiânia, GO, Brazil., Machado Botelho AF; Laboratory of Veterinary Toxicology, Veterinary and Zootechnical School, Federal University of Goiás, Goiânia, GO, Brazil., Santana da Silva RH; Laboratory of Veterinary Toxicology, Veterinary and Zootechnical School, Federal University of Goiás, Goiânia, GO, Brazil., Ferreira de Almeida SS; Laboratory of Veterinary Toxicology, Veterinary and Zootechnical School, Federal University of Goiás, Goiânia, GO, Brazil., Ferreira ER; Special Account Manager-Beef Cattle, Zoetis, Goiânia, GO, Brazil., Caetano David L; Laboratory of Extraction and Separation Methods, Institute of Chemistry, Federal University of Goiás, Goiânia, GO, Brazil., Alves Fortuna Lima D; Laboratory of Extraction and Separation Methods, Institute of Chemistry, Federal University of Goiás, Goiânia, GO, Brazil., Cavalcante E Silva T; Laboratory of Extraction and Separation Methods, Institute of Chemistry, Federal University of Goiás, Goiânia, GO, Brazil., Jorge da Cunha PH; Laboratory of Veterinary Toxicology, Veterinary and Zootechnical School, Federal University of Goiás, Goiânia, GO, Brazil., Roberto Antoniosi Filho N; Laboratory of Extraction and Separation Methods, Institute of Chemistry, Federal University of Goiás, Goiânia, GO, Brazil.
Jazyk: angličtina
Zdroj: Biomedical chromatography : BMC [Biomed Chromatogr] 2021 Apr; Vol. 35 (4), pp. e5017. Date of Electronic Publication: 2020 Nov 18.
DOI: 10.1002/bmc.5017
Abstrakt: The use of pyrethroids has increased over recent years, and corresponds to a higher exposure of animals to pesticide residues in the environment and diet. Here, an outbreak of pyrethroid poisoning in beef cattle was reported occurring in Midwestern Brazil. After veterinary evaluation, it was observed that the bovines presented common pyrethroid intoxication symptoms. Aiming to identify the cattle poising by pyrethroid, earwax samples were collected from two groups: exposed and nonexposed animals from the same farm. Blind earwax analyses of the bovines were carried out using headspace/gas chromatography-mass spectrometry (HS/GC-MS). The HS/GC-MS analysis detected the presence of bifenthrin in the earwax analysis of the exposed animals, confirmed by the comparison of its MS fragments with a bifenthrin standard, and also by its retention time relative to the internal standard. In summary, HS/GC-MS analysis of earwax emerges as a tool that can be used in the detection and monitoring of bifenthrin poisoning in cattle, as a useful veterinary diagnosis that ensures animal health and the safety of their products.
(© 2020 John Wiley & Sons, Ltd.)
Databáze: MEDLINE
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