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An outbreak of systemic intoxication with irritant contact dermatitis due cypermethrin in dairy cows - case report

N.N. Marcom et al · Universidade Federal de Minas Gerais, Escola de Veterinária · 2022

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ABSTRACT Pyrethroids are ectoparasiticides safe for mammals and widely used in farm animals. An outbreak of systemic intoxication with irritant contact dermatitis resulting from the use of cypermethrin pour on in dairy cows is reported in the state of Pernambuco. Eight adult animals were affected, three died on the property and five were referred to the Clínica de Bovinos, Universidade Federal Rural de Pernambuco, Campus Garanhuns. These received 100 mL of pour on Cypermethrin (Ectonil ®, Cipermetrina, Labgard, Brasil). Apathy, hyperexcitability, muscle tremors, sialorrhea, bradycardia and crusted lesions were observed on the dorsum of the neck, scapula, ears and ulcerations in the oral and vaginal mucosa. There was hyperfibrinogenemia and leukocytosis due to neutrophilia with a regenerative left shift. Histopathology showed areas of erosion and ulceration of the epidermis and perivascular lymphohistiocytic and neutrophilic infiltrate in the superficial dermis. Supportive treatment was done with improvement of systemic signs and skin lesions, however, in one animal (with 19 days hospitalized), there was no complete regression of neurological alterations of bradycardia and muscle tremors, even so, it was possible to return to productive activity. High doses of pour on cypermethrin may cause systemic intoxication in cattle and result in bradycardia, hyperexcitability, muscle tremors and sialorrhea with irritant contact dermatitis, and death in severe cases.

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APA 7

al, N. M. E. (2022). An outbreak of systemic intoxication with irritant contact dermatitis due cypermethrin in dairy cows - case report. https://doi.org/10.1590/1678-4162-12677

MLA

al, N.N. Marcom et. "An outbreak of systemic intoxication with irritant contact dermatitis due cypermethrin in dairy cows - case report." 2022. https://doi.org/10.1590/1678-4162-12677.

Chicago

al, N.N. Marcom et. 2022. "An outbreak of systemic intoxication with irritant contact dermatitis due cypermethrin in dairy cows - case report.". https://doi.org/10.1590/1678-4162-12677.

Harvard

al, N. M. E. 2022, An outbreak of systemic intoxication with irritant contact dermatitis due cypermethrin in dairy cows - case report, Universidade Federal de Minas Gerais, Escola de Veterinária, available at: https://doi.org/10.1590/1678-4162-12677 [Accessed 29 Jun. 2026].

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Título
An outbreak of systemic intoxication with irritant contact dermatitis due cypermethrin in dairy cows - case report
Autor / colaboradores
N.N. Marcom et al
Editorial
Universidade Federal de Minas Gerais, Escola de Veterinária
Año de publicación
2022
ISSN
1678-4162
ISSN
1678-4162
Idioma
eng

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