Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent
The overall objective of the study was to evaluate a percussive and an electrical stunning method under laboratory conditions in Atlantic salmon. Evidence of unconsciousness and insensibility of the salmon was provided on the electroencephalogram (EEG) by the appearance of slow waves and spikes, fol...
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2010
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Online Access: | https://research.wur.nl/en/publications/percussion-and-electrical-stunning-of-atlantic-salmon-salmo-salar https://doi.org/10.1016/j.aquaculture.2009.12.022 |
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ftunivwagenin:oai:library.wur.nl:wurpubs/390790 2024-01-14T10:05:29+01:00 Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent Lambooij, E. Grimsboe, E. van de Vis, J.W. Reimert, H.G.M. Nortvedt, R. Roth, B. 2010 application/pdf https://research.wur.nl/en/publications/percussion-and-electrical-stunning-of-atlantic-salmon-salmo-salar https://doi.org/10.1016/j.aquaculture.2009.12.022 en eng https://edepot.wur.nl/134661 https://research.wur.nl/en/publications/percussion-and-electrical-stunning-of-atlantic-salmon-salmo-salar doi:10.1016/j.aquaculture.2009.12.022 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Aquaculture 300 (2010) 1-4 ISSN: 0044-8486 catfish clarias-gariepinus current duration field strength fresh injuries l slaughter info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2010 ftunivwagenin https://doi.org/10.1016/j.aquaculture.2009.12.022 2023-12-20T23:19:05Z The overall objective of the study was to evaluate a percussive and an electrical stunning method under laboratory conditions in Atlantic salmon. Evidence of unconsciousness and insensibility of the salmon was provided on the electroencephalogram (EEG) by the appearance of slow waves and spikes, followed by a strong depression in electrical activity. This phenomenon was observed in 17 salmon after percussive stunning using an air pressure of 8.1 to 10 bars, whilst 8 fish were considered conscious at pressures below 8.1 bars although some were seemingly unconscious on behaviour. Consequences were a haemorrhage in the brain cavity in 15 out of 17 fish, broken upper or lower jaws in 9 fish and eye burst in 8 fish. A general epileptiform insult (unconscious and insensible) was obtained by delivering a voltage, consisting of a direct current (DC) coupled with 100 Hz alternating current (AC) with a peak value of ˜112 volt (V), head to body, for ˜ 0.5 s. The total duration of the insult was 62 ± 44 s (mean ± SD; n = 25) which was followed by minimal brain activity in 19 fish. The heart rate was 20 ± 7 beats/min prior to stunning. After stunning the electrocardiogram (ECG) revealed fibrillation for 22 ± 15 s and became irregular and showed extra systolae (ventrical contraction) afterwards. Exposing the salmon for 5 s with electricity followed by a gill cut resulted that 1 out of 3 fish recovered temporary after 3 min. Haemorrhages were not observed in the fillets. Average current for head to body electrical dry stunning was 668 milliampere (mA) root mean square (RMS) with an average stunning voltage of 107.9 Vrms. Electrical head to body stunning can be recommended when using coupled AC and DC current of 668 mArms and ˜ 107 Vrms. The salmon can be stunned in ˜ 0.5 s. However, a correct bleeding procedure should be developed. For percussive stunning we conclude that if sufficient force is used the fish will be rendered unconscious insensible which result in damage of the carcass, whereas a combined AC and DC can be ... Article in Journal/Newspaper Atlantic salmon Salmo salar Wageningen UR (University & Research Centre): Digital Library Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Aquaculture 300 1-4 107 112 |
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Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
catfish clarias-gariepinus current duration field strength fresh injuries l slaughter |
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catfish clarias-gariepinus current duration field strength fresh injuries l slaughter Lambooij, E. Grimsboe, E. van de Vis, J.W. Reimert, H.G.M. Nortvedt, R. Roth, B. Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent |
topic_facet |
catfish clarias-gariepinus current duration field strength fresh injuries l slaughter |
description |
The overall objective of the study was to evaluate a percussive and an electrical stunning method under laboratory conditions in Atlantic salmon. Evidence of unconsciousness and insensibility of the salmon was provided on the electroencephalogram (EEG) by the appearance of slow waves and spikes, followed by a strong depression in electrical activity. This phenomenon was observed in 17 salmon after percussive stunning using an air pressure of 8.1 to 10 bars, whilst 8 fish were considered conscious at pressures below 8.1 bars although some were seemingly unconscious on behaviour. Consequences were a haemorrhage in the brain cavity in 15 out of 17 fish, broken upper or lower jaws in 9 fish and eye burst in 8 fish. A general epileptiform insult (unconscious and insensible) was obtained by delivering a voltage, consisting of a direct current (DC) coupled with 100 Hz alternating current (AC) with a peak value of ˜112 volt (V), head to body, for ˜ 0.5 s. The total duration of the insult was 62 ± 44 s (mean ± SD; n = 25) which was followed by minimal brain activity in 19 fish. The heart rate was 20 ± 7 beats/min prior to stunning. After stunning the electrocardiogram (ECG) revealed fibrillation for 22 ± 15 s and became irregular and showed extra systolae (ventrical contraction) afterwards. Exposing the salmon for 5 s with electricity followed by a gill cut resulted that 1 out of 3 fish recovered temporary after 3 min. Haemorrhages were not observed in the fillets. Average current for head to body electrical dry stunning was 668 milliampere (mA) root mean square (RMS) with an average stunning voltage of 107.9 Vrms. Electrical head to body stunning can be recommended when using coupled AC and DC current of 668 mArms and ˜ 107 Vrms. The salmon can be stunned in ˜ 0.5 s. However, a correct bleeding procedure should be developed. For percussive stunning we conclude that if sufficient force is used the fish will be rendered unconscious insensible which result in damage of the carcass, whereas a combined AC and DC can be ... |
format |
Article in Journal/Newspaper |
author |
Lambooij, E. Grimsboe, E. van de Vis, J.W. Reimert, H.G.M. Nortvedt, R. Roth, B. |
author_facet |
Lambooij, E. Grimsboe, E. van de Vis, J.W. Reimert, H.G.M. Nortvedt, R. Roth, B. |
author_sort |
Lambooij, E. |
title |
Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent |
title_short |
Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent |
title_full |
Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent |
title_fullStr |
Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent |
title_full_unstemmed |
Percussion and electrical stunning of Atlantic salmon (Salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent |
title_sort |
percussion and electrical stunning of atlantic salmon (salmo salar) after dewatering and subsequent effect on brain and heart activities nd subsequent |
publishDate |
2010 |
url |
https://research.wur.nl/en/publications/percussion-and-electrical-stunning-of-atlantic-salmon-salmo-salar https://doi.org/10.1016/j.aquaculture.2009.12.022 |
long_lat |
ENVELOPE(-85.633,-85.633,-78.617,-78.617) |
geographic |
Slaughter |
geographic_facet |
Slaughter |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Aquaculture 300 (2010) 1-4 ISSN: 0044-8486 |
op_relation |
https://edepot.wur.nl/134661 https://research.wur.nl/en/publications/percussion-and-electrical-stunning-of-atlantic-salmon-salmo-salar doi:10.1016/j.aquaculture.2009.12.022 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1016/j.aquaculture.2009.12.022 |
container_title |
Aquaculture |
container_volume |
300 |
container_issue |
1-4 |
container_start_page |
107 |
op_container_end_page |
112 |
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1788059842916646912 |