PREMEDICATION WITH AMITRAZ OR XYLAZINE FOR ANESTHETIC INDUCTION OF CATTLE WITH KETAMINE

Authors

  • Ricardo Miyasaka Almeida União Pioneira de Integração Social (UPIS), Planaltina, Distrito Federal, Brasil
  • Carlos Augusto Araújo Valadão Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brasil
  • Renata Gemio Reis Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brasil

Keywords:

amitraz, cetamina, bovinos, xilazina

Abstract

The alpha-2 agonists have sedative, analgesic and muscle relaxation properties in cattle. The ketamine is useful in anesthetic protocols as an inductor agent and it produces analgesia and anesthesia. The combination of ketamine with other drugs is necessary considering that it causes deleterious effects like catalepsy and muscle spasticity if given alone. This study evaluated clinical and behavioral effects of xylazine-ketamine or amitraz-ketamine combinations in twenty–one calves. The ketamine increased heart rate in amitraz and control groups. The respiratory rate increased in all experimental groups, restoring the basal values after 25 minutes. The ruminal motility was kept inhibited along whole observation period. It was concluded that xylazine-ketamine combination produced better sedation and muscle relaxation than amitraz-ketamine combination, characterized by a larger incidence of recumbency and by the absence of catalepsy. Both anesthetic protocols were safe for use in cattle, however, xylazine showed a better option as a preanesthetic medication.

 

KEY WORDS: Amitraz, cattle, ketamine, xylazine.

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Published

2008-07-09

How to Cite

ALMEIDA, Ricardo Miyasaka; VALADÃO, Carlos Augusto Araújo; REIS, Renata Gemio. PREMEDICATION WITH AMITRAZ OR XYLAZINE FOR ANESTHETIC INDUCTION OF CATTLE WITH KETAMINE. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 9, n. 2, p. 402–409, 2008. Disponível em: https://revistas.ufg.br/vet/article/view/1023. Acesso em: 19 dec. 2025.

Issue

Vol. 9 No. 2 (2008)

Section

Veterinary Medicine

License

Copyright (c) 2008 Brazilian Animal Science/ Ciência Animal Brasileira

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