Effect of amitraz and xylazine on some physiological variables of horses

A. Queiroz-Neto; A. B. Carregaro; G. Zamur; J. D. Harkins; T. Tobin; M. I. Mataqueiro; S. C. Gonçalves

doi:10.1590/S0102-09352000000100008

Effect of amitraz and xylazine on some physiological variables of horses

A. Queiroz-Neto, A. B. Carregaro, G. Zamur, J. D. Harkins, T. Tobin, M. I. Mataqueiro, S. C. Gonçalves

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The effect of the intravenous injection of amitraz (0.1 mg/kg) to horses on cardiac activity, respiratory rate, intestinal motor activity, rectal temperature, sweating and masticating was evaluated and compared to the effect of intravenous administration of xylazine (1mg/kg, iv) on heart rate, respiratory rate and intestinal activity. Amitraz caused a significant decrease in heart activity, respiratory rate and intestinal movements, but these effects were not as pronounced as those caused by xylazine. Amitraz also caused a significant relaxation of the rectal smooth muscle, and an apparent increase in sweating and in the frequency of horses found masticating hay. Rectal temperature was not influenced by amitraz. The results indicated that amitraz, at the dose used, did not cause severe side effects in horses.

Original language	English
Pages (from-to)	27-32
Number of pages	6
Journal	Arquivo Brasileiro de Medicina Veterinaria e Zootecnia
Volume	52
Issue number	1
DOIs	https://doi.org/10.1590/S0102-09352000000100008
State	Published - Feb 2000

Keywords

Amitraz
Cardiac activity
Horse
Intestinal activity
Respiratory activity
Xylazine

ASJC Scopus subject areas

Veterinary (all)

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10.1590/S0102-09352000000100008

Cite this

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title = "Effect of amitraz and xylazine on some physiological variables of horses",

abstract = "The effect of the intravenous injection of amitraz (0.1 mg/kg) to horses on cardiac activity, respiratory rate, intestinal motor activity, rectal temperature, sweating and masticating was evaluated and compared to the effect of intravenous administration of xylazine (1mg/kg, iv) on heart rate, respiratory rate and intestinal activity. Amitraz caused a significant decrease in heart activity, respiratory rate and intestinal movements, but these effects were not as pronounced as those caused by xylazine. Amitraz also caused a significant relaxation of the rectal smooth muscle, and an apparent increase in sweating and in the frequency of horses found masticating hay. Rectal temperature was not influenced by amitraz. The results indicated that amitraz, at the dose used, did not cause severe side effects in horses.",

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AU - Queiroz-Neto, A.

AU - Carregaro, A. B.

AU - Zamur, G.

AU - Harkins, J. D.

AU - Tobin, T.

AU - Mataqueiro, M. I.

AU - Gonçalves, S. C.

PY - 2000/2

Y1 - 2000/2

N2 - The effect of the intravenous injection of amitraz (0.1 mg/kg) to horses on cardiac activity, respiratory rate, intestinal motor activity, rectal temperature, sweating and masticating was evaluated and compared to the effect of intravenous administration of xylazine (1mg/kg, iv) on heart rate, respiratory rate and intestinal activity. Amitraz caused a significant decrease in heart activity, respiratory rate and intestinal movements, but these effects were not as pronounced as those caused by xylazine. Amitraz also caused a significant relaxation of the rectal smooth muscle, and an apparent increase in sweating and in the frequency of horses found masticating hay. Rectal temperature was not influenced by amitraz. The results indicated that amitraz, at the dose used, did not cause severe side effects in horses.

AB - The effect of the intravenous injection of amitraz (0.1 mg/kg) to horses on cardiac activity, respiratory rate, intestinal motor activity, rectal temperature, sweating and masticating was evaluated and compared to the effect of intravenous administration of xylazine (1mg/kg, iv) on heart rate, respiratory rate and intestinal activity. Amitraz caused a significant decrease in heart activity, respiratory rate and intestinal movements, but these effects were not as pronounced as those caused by xylazine. Amitraz also caused a significant relaxation of the rectal smooth muscle, and an apparent increase in sweating and in the frequency of horses found masticating hay. Rectal temperature was not influenced by amitraz. The results indicated that amitraz, at the dose used, did not cause severe side effects in horses.

KW - Amitraz

KW - Cardiac activity

KW - Horse

KW - Intestinal activity

KW - Respiratory activity

KW - Xylazine

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Effect of amitraz and xylazine on some physiological variables of horses

Abstract

Keywords

ASJC Scopus subject areas

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