sedative and antinociceptive effects of romifidine and xylazine in thoroughbred mares efeito sedativo e antinociceptivo da romifidina e xilazina em éguas puro sangue inglês

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ID: 178468
2006
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Abstract
The sedative and antinociceptive effects of romifidine (0.1mg/kg) and of xylazine (1.0mg/kg) on Thoroughbred mares were studied. Sedation was evaluated by quantifying spontaneous locomotor activity (SLA) and head height (HH) in animals placed in automated individual behaviour stalls. Antinociception was determined utilizing a heat irradiation lamp recording the latency time for the hoof withdrawal reflex (HWRL) and the latency time for the skin twitch reflex (STRL) in a randomised block design with 10 replicates. Comparison of the sedative effects of romifidine and of xylazine on SLA showed a faster effect for xylazine. Regarding the sedative effect of the substances based on HH, romifidine caused a longer-lasting effect. Romifidine caused an increase in HWRL and STRL, and xylazine, an agent known for its analgesic effect, did not have an antinociceptive effect based on STRL result. The antinociceptive effect of romifidine was more pronounced than the xylazine effect.
Compararam-se os efeitos sedativos e antinociceptivos da romifidina (0,1mg/kg) e da xilazina (1,0mg/kg) em éguas da raça Puro Sangue Inglês. A sedação foi quantificada por meio da atividade locomotora espontânea (ALE) e altura da cabeça (AC) em baias individuais automatizadas para o estudo do comportamento. A antinocicepção foi avaliada utilizando uma lâmpada de irradiação de calor registrando-se a latência para o reflexo de retirada do membro (LRRM) e a latência para o reflexo do frêmito cutâneo (LRFC), em delineamento experimental em blocos ao acaso com 10 repetições. O efeito sedativo sobre a ALE foi de aparecimento mais rápido no grupo exposto à xilazina, ao passo que a ptose da cabeça foi mais prolongada no grupo que recebeu romifidina. A romifidina promoveu aumento da LRRM e LRFC e a xilazina não causou efeito antinociceptivo medido pela LRFC. O efeito antinociceptivo da romifidina foi mais pronunciado que o da xilazina.
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christovo2006arquivosedative Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;F.G. Christovão;G. Zamur;M.I. Mataqueiro;A. Queiroz-Neto
Journal Environmental research
Year 2006
DOI
10.1590/S0102-09352006000600009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000600009
Keywords
horse antinociception

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