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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Fish welfare and quality as affected by pre-slaughter and slaughter management Poli, B.M.; Parisi, G.; Scappini, F.; Zampacavallo, G. (2005). Fish welfare and quality as affected by pre-slaughter and slaughter management. Aquacult. Int. 13(1-2): 29-49. https://dx.doi.org/10.1007/s10499-004-9035-1 In: Aquaculture International. Springer: London. ISSN 0967-6120; e-ISSN 1573-143X, meer Ook verschenen in: Focardi, S.; Saroglia, M. (Ed.) (2005). Animal welfare, human health and interactions with the environment. Aquaculture International, 13(1-2). Springer: Dordrecht. 173 pp., meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 352041 [ aanvragen ]

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Trefwoorden

Fauna > Aquatic organisms > Aquatic animals > Fish Handling > Fish handling Quality Slaughter Stress-strain relations Marien/Kust

Author keywords

fish quality; fish welfare; pre-slaughter stress; slaughter methods;stress indices

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Auteurs		Top
Poli, B.M. Parisi, G. Scappini, F. Zampacavallo, G.

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Abstract

A reliable assessment of animal welfare-suffering and of its impact on product quality requires a multidisciplinary approach that takes into account fish behaviour and the different biochemical and physiological processes involved. This might be done by the contemporary study of changes of indicators of brain function, endocrine responses, post mortem tissue biochemical processes and quality changes. This work reviewed some of the most used indices of stress at the time of slaughter, commercial slaughter methods and related stress effects on physical and biochemical parameters of fish quality. The set of the available data seemed to indicate that, although of some results appear contradictory, pre-slaughter and slaughter stressful practices could have an important effect on the flesh quality in fish. A clear effect emerged mostly on the physical properties of flesh, because severe stress at slaughter time exhausted muscular energies, produced more lactic acid, reduced muscular pH, increased the rate of rigor mortis onset. In this way they could have significant negative effects on technological traits, flesh quality and keeping quality of fish. Asphyxia and electrically stunned fish were more stressed than spiked, knocked and live chilled fish. Combining various methods together might be a more satisfactory strategy for both animal welfare and product quality.

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