Betäubung von Regenbogenforellen (Oncorhynchus mykiss) mit Nelkenöl und BHA – Stressbelastung und Produktqualität

Anesthesia of Rainbow trouts (Oncorhynchus mykiss) with clove oil and BHA – stress and product quality In the questioned experiment three different methods of anesthesia were tested on their influence of product quality and the possibility to minimise stress on the rainbow trouts to be slaughtered. One group was anesthesized by clove oil, another by BHA. Those were compared to a group stunned by a blow on the head. The effect of stress was measured by screening of HKT and catecholamines in the blood and by surveillance of behaviour during anesthesia. Product quality was judged out by sensory tests, optical examination of carcasses and concentration of anaesthetics in the blood. All three methods of anesthesia worked within a limited time, with no animal showing signs of typical behaviour under stress. Blood parameters did give hints for no or very low stress. In the mean of sensory testing a few persons were able to detect clove taste. Carcasses showed no sign of visible damages. All three methods of anesthesia are though likely to carry out anesthesia of rainbow trouts for slaughter without negative effects on product quality and in the means of animal welfare.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Ludwig-Maximilians-Universität

Year

2003

Author dc:creator

• Oetinger, Franziska Christine

Repository record source_url

https://edoc.ub.uni-muenchen.de/1496/

OAI identifier oai:identifier

oai:edoc.ub.uni-muenchen.de:1496