Anesthesia of silver catfish with eugenol: time of induction, cortisol response and sensory analysis of fillet

Ciência Rural

Mauro Alves Da Cunha²  Carla Cristina Zeppenfeld²  Luciano De Oliveira Garcia¹  Vania Lucia Loro¹  Milene Braga Da Fonseca¹  Tatiana Emanuelli¹  Ana Paula De Lima Veeck¹  Carlos Eduardo Copatti¹  Bernardo Baldisserotto² 

[1] ,Universidade Federal de Santa Maria Departamento de Fisiologia e Farmacologia Santa Maria RS ,Brasil

关键词: clove oil;    Rhamdia quelen;    sedation;    stress;    taste;    óleo de cravo;    Rhamdia quelen;    sedação;    estresse;    palatabilidade;   

DOI  :  10.1590/S0103-84782010005000154

来源: SciELO

【 摘 要 】

The aim of this study was to identify the time of anesthetic induction and recovery of silver catfish (Rhamdia quelen) exposed to eugenol. It was also determined the efficacy of the anesthetic as a stress reducing agent and performed a sensory analysis of the fillets from fish exposed to this substance. The silver catfish were exposed to air for 1min to carry out biometry, and blood was collected at 0, 1 and 4 hours later. Eugenol can be used in the range of 20-50mg L-1 for anesthetic induction in silver catfish, and recovery time from anesthesia was not affected by eugenol concentration. The control group showed significantly higher cortisol levels 4 hours after biometry than at time zero. Fish anesthetized with eugenol (50mg L-1) presented significantly lower plasma cortisol levels than control fish at the same time. These data indicate that eugenol inhibits the rise of cortisol in the blood. The sensory analysis test demonstrated that eugenol modifies the flavor of the fillet and therefore is contra-indicated for anesthetization of silver catfish that are intended for human consumption.

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